57991953 has 4 divisors (see below), whose sum is σ = 77322608. Its totient is φ = 38661300.

The previous prime is 57991951. The next prime is 57991961. The reversal of 57991953 is 35919975.

57991953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 57991953 - 2¹ = 57991951 is a prime.

It is a super-2 number, since 2×57991953² = 6726133225508418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57991951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9665323 + ... + 9665328.

It is an arithmetic number, because the mean of its divisors is an integer number (19330652).

Almost surely, 2^57991953 is an apocalyptic number.

It is an amenable number.

57991953 is a deficient number, since it is larger than the sum of its proper divisors (19330655).

57991953 is a wasteful number, since it uses less digits than its factorization.

57991953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19330654.

The product of its digits is 382725, while the sum is 48.

The square root of 57991953 is about 7615.2447761054. The cubic root of 57991953 is about 387.0697615427.

The spelling of 57991953 in words is "fifty-seven million, nine hundred ninety-one thousand, nine hundred fifty-three".