57361621 has 8 divisors (see below), whose sum is σ = 61012224. Its totient is φ = 53741760.

The previous prime is 57361597. The next prime is 57361631. The reversal of 57361621 is 12616375.

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

It is a de Polignac number, because none of the positive numbers 2^k-57361621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57361631) 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, 3775 + ... + 11356.

It is an arithmetic number, because the mean of its divisors is an integer number (7626528).

Almost surely, 2^57361621 is an apocalyptic number.

It is an amenable number.

57361621 is a deficient number, since it is larger than the sum of its proper divisors (3650603).

57361621 is a wasteful number, since it uses less digits than its factorization.

57361621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15371.

The product of its digits is 7560, while the sum is 31.

The square root of 57361621 is about 7573.7455066829. The cubic root of 57361621 is about 385.6622570295.

Adding to 57361621 its reverse (12616375), we get a palindrome (69977996).

The spelling of 57361621 in words is "fifty-seven million, three hundred sixty-one thousand, six hundred twenty-one".