27915057 has 16 divisors (see below), whose sum is σ = 42474880. Its totient is φ = 18106416.

The previous prime is 27915011. The next prime is 27915073. The reversal of 27915057 is 75051972.

It is not a de Polignac number, because 27915057 - 2⁶ = 27914993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27919057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12973 + ... + 14970.

It is an arithmetic number, because the mean of its divisors is an integer number (2654680).

Almost surely, 2^27915057 is an apocalyptic number.

27915057 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

27915057 is a deficient number, since it is larger than the sum of its proper divisors (14559823).

27915057 is a wasteful number, since it uses less digits than its factorization.

27915057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27989 (or 27983 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

The square root of 27915057 is about 5283.4701664720. The cubic root of 27915057 is about 303.3515183183.

The spelling of 27915057 in words is "twenty-seven million, nine hundred fifteen thousand, fifty-seven".