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5156105105 = 51031221021
BaseRepresentation
bin1001100110101001…
…11110101110010001
3111022100010021111202
410303110332232101
541024430330410
62211345120545
7241526112254
oct46324765621
914270107452
105156105105
11220653a098
12bba929155
136422b7588
1436cad909b
152029deca5
hex13353eb91

5156105105 has 4 divisors (see below), whose sum is σ = 6187326132. Its totient is φ = 4124884080.

The previous prime is 5156105099. The next prime is 5156105173. The reversal of 5156105105 is 5015016515.

It is a happy number.

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 4071588481 + 1084516624 = 63809^2 + 32932^2 .

It is not a de Polignac number, because 5156105105 - 24 = 5156105089 is a prime.

It is a super-2 number, since 2×51561051052 = 53170839707614122050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515610506 + ... + 515610515.

It is an arithmetic number, because the mean of its divisors is an integer number (1546831533).

Almost surely, 25156105105 is an apocalyptic number.

It is an amenable number.

5156105105 is a deficient number, since it is larger than the sum of its proper divisors (1031221027).

5156105105 is a wasteful number, since it uses less digits than its factorization.

5156105105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031221026.

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 5156105105 is about 71806.0241553590. The cubic root of 5156105105 is about 1727.5896249549.

The spelling of 5156105105 in words is "five billion, one hundred fifty-six million, one hundred five thousand, one hundred five".

Divisors: 1 5 1031221021 5156105105