57399287 has 8 divisors (see below), whose sum is σ = 62767872. Its totient is φ = 52055800.

The previous prime is 57399269. The next prime is 57399313. The reversal of 57399287 is 78299375.

It is a happy number.

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 57399287 - 2¹⁶ = 57333751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57399217) 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, 1313 + ... + 10794.

It is an arithmetic number, because the mean of its divisors is an integer number (7845984).

Almost surely, 2^57399287 is an apocalyptic number.

57399287 is a deficient number, since it is larger than the sum of its proper divisors (5368585).

57399287 is a wasteful number, since it uses less digits than its factorization.

57399287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12549.

The product of its digits is 952560, while the sum is 50.

The square root of 57399287 is about 7576.2317150415. The cubic root of 57399287 is about 385.7466524606.

The spelling of 57399287 in words is "fifty-seven million, three hundred ninety-nine thousand, two hundred eighty-seven".