10557765 has 48 divisors (see below), whose sum is σ = 19953648. Its totient is φ = 5142528.

The previous prime is 10557737. The next prime is 10557773. The reversal of 10557765 is 56775501.

10557765 = T₂₆₄ + T₂₆₅ + ... + T₄₃₃.

It can be written as a sum of positive squares in 8 ways, for example, as 1083681 + 9474084 = 1041^2 + 3078^2 .

It is not a de Polignac number, because 10557765 - 2⁸ = 10557509 is a prime.

It is a super-2 number, since 2×10557765² = 222932803590450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28119 + ... + 28491.

It is an arithmetic number, because the mean of its divisors is an integer number (415701).

Almost surely, 2^10557765 is an apocalyptic number.

10557765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10557765 is a deficient number, since it is larger than the sum of its proper divisors (9395883).

10557765 is a wasteful number, since it uses less digits than its factorization.

10557765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 10557765 is about 3249.2714568038. The cubic root of 10557765 is about 219.3767830473.

The spelling of 10557765 in words is "ten million, five hundred fifty-seven thousand, seven hundred sixty-five".