57725021 has 8 divisors (see below), whose sum is σ = 60964800. Its totient is φ = 54505440.

The previous prime is 57724981. The next prime is 57725023. The reversal of 57725021 is 12052775.

57725021 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 a cyclic number.

It is not a de Polignac number, because 57725021 - 2⁶ = 57724957 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 (57725023) 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, 1025 + ... + 10793.

It is an arithmetic number, because the mean of its divisors is an integer number (7620600).

Almost surely, 2^57725021 is an apocalyptic number.

It is an amenable number.

57725021 is a deficient number, since it is larger than the sum of its proper divisors (3239779).

57725021 is a wasteful number, since it uses less digits than its factorization.

57725021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10099.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 57725021 is about 7597.6984014898. The cubic root of 57725021 is about 386.4749650049.

Adding to 57725021 its reverse (12052775), we get a palindrome (69777796).

The spelling of 57725021 in words is "fifty-seven million, seven hundred twenty-five thousand, twenty-one".