57478013 has 4 divisors (see below), whose sum is σ = 57494400. Its totient is φ = 57461628.

The previous prime is 57478009. The next prime is 57478019. The reversal of 57478013 is 31087475.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57478013 - 2² = 57478009 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 (57478019) 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, 563 + ... + 10736.

It is an arithmetic number, because the mean of its divisors is an integer number (14373600).

Almost surely, 2^57478013 is an apocalyptic number.

It is an amenable number.

57478013 is a deficient number, since it is larger than the sum of its proper divisors (16387).

57478013 is a wasteful number, since it uses less digits than its factorization.

57478013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16386.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 57478013 is about 7581.4255255855. The cubic root of 57478013 is about 385.9229288526.

It can be divided in two parts, 574 and 78013, that added together give a palindrome (78587).

The spelling of 57478013 in words is "fifty-seven million, four hundred seventy-eight thousand, thirteen".