57499993 has 4 divisors (see below), whose sum is σ = 58192848. Its totient is φ = 56807140.

The previous prime is 57499969. The next prime is 57499997. The reversal of 57499993 is 39999475.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57499993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57499997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346303 + ... + 346468.

It is an arithmetic number, because the mean of its divisors is an integer number (14548212).

Almost surely, 2^57499993 is an apocalyptic number.

It is an amenable number.

57499993 is a deficient number, since it is larger than the sum of its proper divisors (692855).

57499993 is an equidigital number, since it uses as much as digits as its factorization.

57499993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692854.

The product of its digits is 2755620, while the sum is 55.

The square root of 57499993 is about 7582.8749824852. The cubic root of 57499993 is about 385.9721158054.

The spelling of 57499993 in words is "fifty-seven million, four hundred ninety-nine thousand, nine hundred ninety-three".