57613993 has 2 divisors, whose sum is σ = 57613994. Its totient is φ = 57613992.

The previous prime is 57613991. The next prime is 57614033. The reversal of 57613993 is 39931675.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56145049 + 1468944 = 7493^2 + 1212^2 .

It is a cyclic number.

It is not a de Polignac number, because 57613993 - 2¹ = 57613991 is a prime.

Together with 57613991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (57613991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28806996 + 28806997.

It is an arithmetic number, because the mean of its divisors is an integer number (28806997).

Almost surely, 2^57613993 is an apocalyptic number.

It is an amenable number.

57613993 is a deficient number, since it is larger than the sum of its proper divisors (1).

57613993 is an equidigital number, since it uses as much as digits as its factorization.

57613993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 43.

The square root of 57613993 is about 7590.3881982412. The cubic root of 57613993 is about 386.2270246735.

The spelling of 57613993 in words is "fifty-seven million, six hundred thirteen thousand, nine hundred ninety-three".