57613729 has 2 divisors, whose sum is σ = 57613730. Its totient is φ = 57613728.

The previous prime is 57613727. The next prime is 57613741. The reversal of 57613729 is 92731675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56851600 + 762129 = 7540^2 + 873^2 .

It is a cyclic number.

It is not a de Polignac number, because 57613729 - 2¹ = 57613727 is a prime.

Together with 57613727, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 57613691 and 57613700.

It is not a weakly prime, because it can be changed into another prime (57613723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28806864 + 28806865.

It is an arithmetic number, because the mean of its divisors is an integer number (28806865).

Almost surely, 2^57613729 is an apocalyptic number.

It is an amenable number.

57613729 is a deficient number, since it is larger than the sum of its proper divisors (1).

57613729 is an equidigital number, since it uses as much as digits as its factorization.

57613729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 40.

The square root of 57613729 is about 7590.3708078064. The cubic root of 57613729 is about 386.2264347468.

The spelling of 57613729 in words is "fifty-seven million, six hundred thirteen thousand, seven hundred twenty-nine".