90975057 has 24 divisors (see below), whose sum is σ = 126824544. Its totient is φ = 57972096.

The previous prime is 90975047. The next prime is 90975067. The reversal of 90975057 is 75057909.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90975047) and next prime (90975067).

It is not a de Polignac number, because 90975057 - 2⁷ = 90974929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90975037) 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 23 ways as a sum of consecutive naturals, for example, 805033 + ... + 805145.

It is an arithmetic number, because the mean of its divisors is an integer number (5284356).

Almost surely, 2^90975057 is an apocalyptic number.

It is an amenable number.

90975057 is a deficient number, since it is larger than the sum of its proper divisors (35849487).

90975057 is a wasteful number, since it uses less digits than its factorization.

90975057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 99225, while the sum is 42.

The square root of 90975057 is about 9538.0845561360. The cubic root of 90975057 is about 449.7530447453.

The spelling of 90975057 in words is "ninety million, nine hundred seventy-five thousand, fifty-seven".