57655407 has 4 divisors (see below), whose sum is σ = 76873880. Its totient is φ = 38436936.

The previous prime is 57655397. The next prime is 57655421. The reversal of 57655407 is 70455675.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 57655407 - 2⁶ = 57655343 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 (57655427) 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, 9609232 + ... + 9609237.

It is an arithmetic number, because the mean of its divisors is an integer number (19218470).

Almost surely, 2^57655407 is an apocalyptic number.

57655407 is a deficient number, since it is larger than the sum of its proper divisors (19218473).

57655407 is a wasteful number, since it uses less digits than its factorization.

57655407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19218472.

The product of its (nonzero) digits is 147000, while the sum is 39.

The square root of 57655407 is about 7593.1157636375. The cubic root of 57655407 is about 386.3195448764.

The spelling of 57655407 in words is "fifty-seven million, six hundred fifty-five thousand, four hundred seven".