57322991 has 8 divisors (see below), whose sum is σ = 63109200. Its totient is φ = 51632640.

The previous prime is 57322973. The next prime is 57323009. The reversal of 57322991 is 19922375.

It is an interprime number because it is at equal distance from previous prime (57322973) and next prime (57323009).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57322991 - 2⁶ = 57322927 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57322921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22706 + ... + 25103.

It is an arithmetic number, because the mean of its divisors is an integer number (7888650).

Almost surely, 2^57322991 is an apocalyptic number.

57322991 is a deficient number, since it is larger than the sum of its proper divisors (5786209).

57322991 is a wasteful number, since it uses less digits than its factorization.

57322991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47929.

The product of its digits is 34020, while the sum is 38.

The square root of 57322991 is about 7571.1948198418. The cubic root of 57322991 is about 385.5756632504.

The spelling of 57322991 in words is "fifty-seven million, three hundred twenty-two thousand, nine hundred ninety-one".