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105045001 = 432442907
BaseRepresentation
bin1100100001011…
…01110000001001
321022122211122121
412100231300021
5203342420001
614231251241
72413603435
oct620556011
9238584577
10105045001
1154327956
122b219b21
13189bbc09
14dd459c5
15934e6a1
hex642dc09

105045001 has 4 divisors (see below), whose sum is σ = 107487952. Its totient is φ = 102602052.

The previous prime is 105044999. The next prime is 105045007. The reversal of 105045001 is 100540501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100540501 = 584317207.

It is a cyclic number.

It is not a de Polignac number, because 105045001 - 21 = 105044999 is a prime.

It is a super-2 number, since 2×1050450012 = 22068904470180002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105045007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1221411 + ... + 1221496.

It is an arithmetic number, because the mean of its divisors is an integer number (26871988).

Almost surely, 2105045001 is an apocalyptic number.

It is an amenable number.

105045001 is a deficient number, since it is larger than the sum of its proper divisors (2442951).

105045001 is an equidigital number, since it uses as much as digits as its factorization.

105045001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442950.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 105045001 is about 10249.1463546971. The cubic root of 105045001 is about 471.8367855315.

Adding to 105045001 its reverse (100540501), we get a palindrome (205585502).

The spelling of 105045001 in words is "one hundred five million, forty-five thousand, one".

Divisors: 1 43 2442907 105045001