57997181 has 4 divisors (see below), whose sum is σ = 63269664. Its totient is φ = 52724700.

The previous prime is 57997151. The next prime is 57997189. The reversal of 57997181 is 18179975.

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-57997181 is a prime.

It is a super-2 number, since 2×57997181² = 6727346007893522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57997189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2636225 + ... + 2636246.

It is an arithmetic number, because the mean of its divisors is an integer number (15817416).

Almost surely, 2^57997181 is an apocalyptic number.

It is an amenable number.

57997181 is a deficient number, since it is larger than the sum of its proper divisors (5272483).

57997181 is a wasteful number, since it uses less digits than its factorization.

57997181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272482.

The product of its digits is 158760, while the sum is 47.

The square root of 57997181 is about 7615.5880271979. The cubic root of 57997181 is about 387.0813926961.

The spelling of 57997181 in words is "fifty-seven million, nine hundred ninety-seven thousand, one hundred eighty-one".