57478407 has 8 divisors (see below), whose sum is σ = 87586176. Its totient is φ = 32844792.

The previous prime is 57478397. The next prime is 57478423. The reversal of 57478407 is 70487475.

57478407 = 924² + 925² + ... + 986².

57478407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57478407 - 2⁸ = 57478151 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57478457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1368513 + ... + 1368554.

It is an arithmetic number, because the mean of its divisors is an integer number (10948272).

Almost surely, 2^57478407 is an apocalyptic number.

57478407 is a deficient number, since it is larger than the sum of its proper divisors (30107769).

57478407 is a wasteful number, since it uses less digits than its factorization.

57478407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737077.

The product of its (nonzero) digits is 219520, while the sum is 42.

The square root of 57478407 is about 7581.4515101002. The cubic root of 57478407 is about 385.9238106582.

The spelling of 57478407 in words is "fifty-seven million, four hundred seventy-eight thousand, four hundred seven".