57399405 has 16 divisors (see below), whose sum is σ = 104959104. Its totient is φ = 26239680.

The previous prime is 57399379. The next prime is 57399409. The reversal of 57399405 is 50499375.

It is not a de Polignac number, because 57399405 - 2⁶ = 57399341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57399409) 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, 273226 + ... + 273435.

It is an arithmetic number, because the mean of its divisors is an integer number (6559944).

Almost surely, 2^57399405 is an apocalyptic number.

It is an amenable number.

57399405 is a deficient number, since it is larger than the sum of its proper divisors (47559699).

57399405 is a wasteful number, since it uses less digits than its factorization.

57399405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546676.

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 57399405 is about 7576.2395025501. The cubic root of 57399405 is about 385.7469167965.

The spelling of 57399405 in words is "fifty-seven million, three hundred ninety-nine thousand, four hundred five".