57012427 has 4 divisors (see below), whose sum is σ = 58403016. Its totient is φ = 55621840.

The previous prime is 57012419. The next prime is 57012443. The reversal of 57012427 is 72421075.

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 57012427 - 2³ = 57012419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57012395 and 57012404.

It is not an unprimeable number, because it can be changed into a prime (57012497) 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, 695233 + ... + 695314.

It is an arithmetic number, because the mean of its divisors is an integer number (14600754).

Almost surely, 2^57012427 is an apocalyptic number.

57012427 is a deficient number, since it is larger than the sum of its proper divisors (1390589).

57012427 is a wasteful number, since it uses less digits than its factorization.

57012427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390588.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 57012427 is about 7550.6573885987. The cubic root of 57012427 is about 384.8780791209.

It can be divided in two parts, 5701 and 2427, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 57012427 in words is "fifty-seven million, twelve thousand, four hundred twenty-seven".