57252621 has 8 divisors (see below), whose sum is σ = 76413024. Its totient is φ = 38130320.

The previous prime is 57252607. The next prime is 57252623. The reversal of 57252621 is 12625275.

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 57252621 - 2¹¹ = 57250573 is a prime.

It is a super-2 number, since 2×57252621² = 6555725222739282, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57252623) 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, 5811 + ... + 12176.

It is an arithmetic number, because the mean of its divisors is an integer number (9551628).

Almost surely, 2^57252621 is an apocalyptic number.

It is an amenable number.

57252621 is a deficient number, since it is larger than the sum of its proper divisors (19160403).

57252621 is a wasteful number, since it uses less digits than its factorization.

57252621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19051.

The product of its digits is 8400, while the sum is 30.

The square root of 57252621 is about 7566.5461737837. The cubic root of 57252621 is about 385.4178204176.

Adding to 57252621 its reverse (12625275), we get a palindrome (69877896).

The spelling of 57252621 in words is "fifty-seven million, two hundred fifty-two thousand, six hundred twenty-one".