57254721 has 8 divisors (see below), whose sum is σ = 77633760. Its totient is φ = 37522752.

The previous prime is 57254711. The next prime is 57254749. The reversal of 57254721 is 12745275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57254721 - 2¹¹ = 57252673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57254711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161560 + ... + 161913.

It is an arithmetic number, because the mean of its divisors is an integer number (9704220).

Almost surely, 2^57254721 is an apocalyptic number.

It is an amenable number.

57254721 is a deficient number, since it is larger than the sum of its proper divisors (20379039).

57254721 is a wasteful number, since it uses less digits than its factorization.

57254721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323535.

The product of its digits is 19600, while the sum is 33.

The square root of 57254721 is about 7566.6849412408. The cubic root of 57254721 is about 385.4225326766.

Adding to 57254721 its reverse (12745275), we get a palindrome (69999996).

It can be divided in two parts, 57254 and 721, that added together give a palindrome (57975).

The spelling of 57254721 in words is "fifty-seven million, two hundred fifty-four thousand, seven hundred twenty-one".