57720841 has 16 divisors (see below), whose sum is σ = 62726400. Its totient is φ = 52939008.

The previous prime is 57720833. The next prime is 57720847. The reversal of 57720841 is 14802775.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 57720841 - 2³ = 57720833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57720797 and 57720806.

It is not an unprimeable number, because it can be changed into a prime (57720847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97041 + ... + 97633.

It is an arithmetic number, because the mean of its divisors is an integer number (3920400).

Almost surely, 2^57720841 is an apocalyptic number.

It is an amenable number.

57720841 is a deficient number, since it is larger than the sum of its proper divisors (5005559).

57720841 is a wasteful number, since it uses less digits than its factorization.

57720841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 57720841 is about 7597.4233132030. The cubic root of 57720841 is about 386.4656362694.

The spelling of 57720841 in words is "fifty-seven million, seven hundred twenty thousand, eight hundred forty-one".