57322990 has 16 divisors (see below), whose sum is σ = 105970752. Its totient is φ = 22309344.

The previous prime is 57322973. The next prime is 57323009. The reversal of 57322990 is 9922375.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77094 + ... + 77833.

It is an arithmetic number, because the mean of its divisors is an integer number (6623172).

Almost surely, 2^57322990 is an apocalyptic number.

57322990 is a deficient number, since it is larger than the sum of its proper divisors (48647762).

57322990 is a wasteful number, since it uses less digits than its factorization.

57322990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154971.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 57322990 is about 7571.1947538021. The cubic root of 57322990 is about 385.5756610083.

The spelling of 57322990 in words is "fifty-seven million, three hundred twenty-two thousand, nine hundred ninety".