57997080 has 128 divisors (see below), whose sum is σ = 195955200. Its totient is φ = 15255936.

The previous prime is 57997073. The next prime is 57997087. The reversal of 57997080 is 8079975.

57997080 is a `hidden beast` number, since 579 + 9 + 70 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (57997073) and next prime (57997087).

It is a super-2 number, since 2×57997080² = 6727322577052800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57997087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89317 + ... + 89963.

It is an arithmetic number, because the mean of its divisors is an integer number (1530900).

Almost surely, 2^57997080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57997080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97977600).

57997080 is an abundant number, since it is smaller than the sum of its proper divisors (137958120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57997080 is a wasteful number, since it uses less digits than its factorization.

57997080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 57997080 is about 7615.5813960590. The cubic root of 57997080 is about 387.0811679999.

The spelling of 57997080 in words is "fifty-seven million, nine hundred ninety-seven thousand, eighty".