57238305 has 16 divisors (see below), whose sum is σ = 91711680. Its totient is φ = 30483648.

The previous prime is 57238273. The next prime is 57238343. The reversal of 57238305 is 50383275.

It is not a de Polignac number, because 57238305 - 2⁵ = 57238273 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10134 + ... + 14736.

It is an arithmetic number, because the mean of its divisors is an integer number (5731980).

Almost surely, 2^57238305 is an apocalyptic number.

It is an amenable number.

57238305 is a deficient number, since it is larger than the sum of its proper divisors (34473375).

57238305 is a wasteful number, since it uses less digits than its factorization.

57238305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5440.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 57238305 is about 7565.6001083853. The cubic root of 57238305 is about 385.3856932045.

It can be divided in two parts, 5723 and 8305, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 57238305 in words is "fifty-seven million, two hundred thirty-eight thousand, three hundred five".