57273621 has 8 divisors (see below), whose sum is σ = 76468224. Its totient is φ = 38130720.

The previous prime is 57273617. The next prime is 57273691. The reversal of 57273621 is 12637275.

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

It is not a de Polignac number, because 57273621 - 2² = 57273617 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57273691) 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, 10261 + ... + 14826.

It is an arithmetic number, because the mean of its divisors is an integer number (9558528).

Almost surely, 2^57273621 is an apocalyptic number.

It is an amenable number.

57273621 is a deficient number, since it is larger than the sum of its proper divisors (19194603).

57273621 is a wasteful number, since it uses less digits than its factorization.

57273621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25851.

The product of its digits is 17640, while the sum is 33.

The square root of 57273621 is about 7567.9337338536. The cubic root of 57273621 is about 385.4649378229.

The spelling of 57273621 in words is "fifty-seven million, two hundred seventy-three thousand, six hundred twenty-one".