57725551 has 4 divisors (see below), whose sum is σ = 62165992. Its totient is φ = 53285112.

The previous prime is 57725527. The next prime is 57725567. The reversal of 57725551 is 15552775.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 57725551 - 2⁵ = 57725519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57725551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57725501) 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, 2220201 + ... + 2220226.

It is an arithmetic number, because the mean of its divisors is an integer number (15541498).

Almost surely, 2^57725551 is an apocalyptic number.

57725551 is a deficient number, since it is larger than the sum of its proper divisors (4440441).

57725551 is a wasteful number, since it uses less digits than its factorization.

57725551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440440.

The product of its digits is 61250, while the sum is 37.

The square root of 57725551 is about 7597.7332803936. The cubic root of 57725551 is about 386.4761478028.

The spelling of 57725551 in words is "fifty-seven million, seven hundred twenty-five thousand, five hundred fifty-one".