1657015055 has 12 divisors (see below), whose sum is σ = 2026660440. Its totient is φ = 1300589472.

The previous prime is 1657015051. The next prime is 1657015081. The reversal of 1657015055 is 5505107561.

It is not a de Polignac number, because 1657015055 - 2² = 1657015051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1657015051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44945 + ... + 73034.

It is an arithmetic number, because the mean of its divisors is an integer number (168888370).

Almost surely, 2^1657015055 is an apocalyptic number.

1657015055 is a deficient number, since it is larger than the sum of its proper divisors (369645385).

1657015055 is an equidigital number, since it uses as much as digits as its factorization.

1657015055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118090 (or 118037 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 35.

The square root of 1657015055 is about 40706.4497960704. The cubic root of 1657015055 is about 1183.3380192016.

The spelling of 1657015055 in words is "one billion, six hundred fifty-seven million, fifteen thousand, fifty-five".