10055815 has 16 divisors (see below), whose sum is σ = 15045120. Its totient is φ = 6268320.

The previous prime is 10055777. The next prime is 10055819. The reversal of 10055815 is 51855001.

10055815 = 841² + 842² + ... + 854².

It is not a de Polignac number, because 10055815 - 2¹¹ = 10053767 is a prime.

It is a super-2 number, since 2×10055815² = 202238830628450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10055815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10055819) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12675 + ... + 13444.

It is an arithmetic number, because the mean of its divisors is an integer number (940320).

Almost surely, 2^10055815 is an apocalyptic number.

10055815 is a deficient number, since it is larger than the sum of its proper divisors (4989305).

10055815 is a wasteful number, since it uses less digits than its factorization.

10055815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26142.

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 10055815 is about 3171.0905064347. The cubic root of 10055815 is about 215.8435581321.

The spelling of 10055815 in words is "ten million, fifty-five thousand, eight hundred fifteen".