10513557 has 40 divisors (see below), whose sum is σ = 16727040. Its totient is φ = 6570720.

The previous prime is 10513549. The next prime is 10513561. The reversal of 10513557 is 75531501.

10513557 is a `hidden beast` number, since 105 + 1 + 3 + 557 = 666.

It is not a de Polignac number, because 10513557 - 2³ = 10513549 is a prime.

It is a super-2 number, since 2×10513557² = 221069761584498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 10513557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10513537) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 133044 + ... + 133122.

It is an arithmetic number, because the mean of its divisors is an integer number (418176).

Almost surely, 2^10513557 is an apocalyptic number.

It is an amenable number.

10513557 is a deficient number, since it is larger than the sum of its proper divisors (6213483).

10513557 is an equidigital number, since it uses as much as digits as its factorization.

10513557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 27.

The square root of 10513557 is about 3242.4615649226. The cubic root of 10513557 is about 219.0701595440.

The spelling of 10513557 in words is "ten million, five hundred thirteen thousand, five hundred fifty-seven".