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105001513 = 431243623
BaseRepresentation
bin1100100001000…
…11001000101001
321022120121222221
412100203020221
5203340022023
614230314041
72413332601
oct620431051
9238517887
10105001513
11542a8211
122b1b8921
13189a5196
14dd33c01
15934185d
hex6423229

105001513 has 4 divisors (see below), whose sum is σ = 105245568. Its totient is φ = 104757460.

The previous prime is 105001511. The next prime is 105001621. The reversal of 105001513 is 315100501.

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: 315100501 = 1549720333.

It is a cyclic number.

It is not a de Polignac number, because 105001513 - 21 = 105001511 is a prime.

It is a super-2 number, since 2×1050015132 = 22050635464578338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105001511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121381 + ... + 122242.

It is an arithmetic number, because the mean of its divisors is an integer number (26311392).

Almost surely, 2105001513 is an apocalyptic number.

It is an amenable number.

105001513 is a deficient number, since it is larger than the sum of its proper divisors (244055).

105001513 is an equidigital number, since it uses as much as digits as its factorization.

105001513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244054.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 105001513 is about 10247.0245925342. The cubic root of 105001513 is about 471.7716640116.

The spelling of 105001513 in words is "one hundred five million, one thousand, five hundred thirteen".

Divisors: 1 431 243623 105001513