57583721 has 8 divisors (see below), whose sum is σ = 63526344. Its totient is φ = 51857280.

The previous prime is 57583717. The next prime is 57583727. The reversal of 57583721 is 12738575.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4818025 + 52765696 = 2195^2 + 7264^2 .

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 57583721 - 2² = 57583717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57583727) 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, 53486 + ... + 54551.

It is an arithmetic number, because the mean of its divisors is an integer number (7940793).

Almost surely, 2^57583721 is an apocalyptic number.

It is an amenable number.

57583721 is a deficient number, since it is larger than the sum of its proper divisors (5942623).

57583721 is a wasteful number, since it uses less digits than its factorization.

57583721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108091.

The product of its digits is 58800, while the sum is 38.

The square root of 57583721 is about 7588.3938353251. The cubic root of 57583721 is about 386.1593680029.

The spelling of 57583721 in words is "fifty-seven million, five hundred eighty-three thousand, seven hundred twenty-one".