57399447 has 16 divisors (see below), whose sum is σ = 87858432. Its totient is φ = 32652480.

The previous prime is 57399427. The next prime is 57399449. The reversal of 57399447 is 74499375.

It is a happy number.

It is not a de Polignac number, because 57399447 - 2⁷ = 57399319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57399396 and 57399405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57399449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1254 + ... + 10787.

It is an arithmetic number, because the mean of its divisors is an integer number (5491152).

Almost surely, 2^57399447 is an apocalyptic number.

57399447 is a deficient number, since it is larger than the sum of its proper divisors (30458985).

57399447 is a wasteful number, since it uses less digits than its factorization.

57399447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12278.

The product of its digits is 952560, while the sum is 48.

The square root of 57399447 is about 7576.2422743732. The cubic root of 57399447 is about 385.7470108821.

The spelling of 57399447 in words is "fifty-seven million, three hundred ninety-nine thousand, four hundred forty-seven".