32257155 has 96 divisors (see below), whose sum is σ = 66714624. Its totient is φ = 13001472.

The previous prime is 32257153. The next prime is 32257157. The reversal of 32257155 is 55175223.

It is an interprime number because it is at equal distance from previous prime (32257153) and next prime (32257157).

It is not a de Polignac number, because 32257155 - 2¹ = 32257153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32257151) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 871797 + ... + 871833.

It is an arithmetic number, because the mean of its divisors is an integer number (694944).

Almost surely, 2^32257155 is an apocalyptic number.

32257155 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

32257155 is an abundant number, since it is smaller than the sum of its proper divisors (34457469).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32257155 is a wasteful number, since it uses less digits than its factorization.

32257155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 94 counting only the distinct ones).

The product of its digits is 10500, while the sum is 30.

The square root of 32257155 is about 5679.5382734867. The cubic root of 32257155 is about 318.3283760333.

The spelling of 32257155 in words is "thirty-two million, two hundred fifty-seven thousand, one hundred fifty-five".