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101401145 = 520280229
BaseRepresentation
bin1100000101101…
…00001000111001
321001210201012222
412002310020321
5201424314040
614021213425
72340616106
oct602641071
9231721188
10101401145
11522691aa
1229b61275
13180144a1
14d677aad
158d7ebb5
hex60b4239

101401145 has 4 divisors (see below), whose sum is σ = 121681380. Its totient is φ = 81120912.

The previous prime is 101401129. The next prime is 101401151. The reversal of 101401145 is 541104101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35271721 + 66129424 = 5939^2 + 8132^2 .

It is a cyclic number.

It is not a de Polignac number, because 101401145 - 24 = 101401129 is a prime.

It is a super-2 number, since 2×1014011452 = 20564384414622050, which contains 22 as substring.

It is an unprimeable number.

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, 10140110 + ... + 10140119.

It is an arithmetic number, because the mean of its divisors is an integer number (30420345).

Almost surely, 2101401145 is an apocalyptic number.

It is an amenable number.

101401145 is a deficient number, since it is larger than the sum of its proper divisors (20280235).

101401145 is an equidigital number, since it uses as much as digits as its factorization.

101401145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20280234.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 101401145 is about 10069.8135533882. The cubic root of 101401145 is about 466.3166828847.

Adding to 101401145 its reverse (541104101), we get a palindrome (642505246).

The spelling of 101401145 in words is "one hundred one million, four hundred one thousand, one hundred forty-five".

Divisors: 1 5 20280229 101401145