57754721 has 2 divisors, whose sum is σ = 57754722. Its totient is φ = 57754720.

The previous prime is 57754663. The next prime is 57754727. The reversal of 57754721 is 12745775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45427600 + 12327121 = 6740^2 + 3511^2 .

It is a cyclic number.

It is not a de Polignac number, because 57754721 - 2¹⁰ = 57753697 is a prime.

It is not a weakly prime, because it can be changed into another prime (57754727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28877360 + 28877361.

It is an arithmetic number, because the mean of its divisors is an integer number (28877361).

Almost surely, 2^57754721 is an apocalyptic number.

It is an amenable number.

57754721 is a deficient number, since it is larger than the sum of its proper divisors (1).

57754721 is an equidigital number, since it uses as much as digits as its factorization.

57754721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68600, while the sum is 38.

The square root of 57754721 is about 7599.6526894326. The cubic root of 57754721 is about 386.5412351610.

The spelling of 57754721 in words is "fifty-seven million, seven hundred fifty-four thousand, seven hundred twenty-one".