57977709 has 4 divisors (see below), whose sum is σ = 77303616. Its totient is φ = 38651804.

The previous prime is 57977693. The next prime is 57977723. The reversal of 57977709 is 90777975.

It is a happy number.

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 not a de Polignac number, because 57977709 - 2⁴ = 57977693 is a prime.

It is a super-2 number, since 2×57977709² = 6722829481777362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57977789) 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, 9662949 + ... + 9662954.

It is an arithmetic number, because the mean of its divisors is an integer number (19325904).

Almost surely, 2^57977709 is an apocalyptic number.

It is an amenable number.

57977709 is a deficient number, since it is larger than the sum of its proper divisors (19325907).

57977709 is a wasteful number, since it uses less digits than its factorization.

57977709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19325906.

The product of its (nonzero) digits is 972405, while the sum is 51.

The square root of 57977709 is about 7614.3094893759. The cubic root of 57977709 is about 387.0380682194.

The spelling of 57977709 in words is "fifty-seven million, nine hundred seventy-seven thousand, seven hundred nine".