57273431 has 4 divisors (see below), whose sum is σ = 57501864. Its totient is φ = 57045000.

The previous prime is 57273413. The next prime is 57273439. The reversal of 57273431 is 13437275.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57273431 - 2⁶ = 57273367 is a prime.

It is a super-2 number, since 2×57273431² = 6560491797023522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57273439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113840 + ... + 114341.

It is an arithmetic number, because the mean of its divisors is an integer number (14375466).

Almost surely, 2^57273431 is an apocalyptic number.

57273431 is a deficient number, since it is larger than the sum of its proper divisors (228433).

57273431 is a wasteful number, since it uses less digits than its factorization.

57273431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228432.

The product of its digits is 17640, while the sum is 32.

The square root of 57273431 is about 7567.9211808792. The cubic root of 57273431 is about 385.4645115742.

The spelling of 57273431 in words is "fifty-seven million, two hundred seventy-three thousand, four hundred thirty-one".