57911616 has 168 divisors, whose sum is σ = 193999104. Its totient is φ = 16174080.

The previous prime is 57911599. The next prime is 57911617. The reversal of 57911616 is 61611975.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57911617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213561 + ... + 213831.

Almost surely, 2^57911616 is an apocalyptic number.

57911616 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57911616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96999552).

57911616 is an abundant number, since it is smaller than the sum of its proper divisors (136087488).

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

57911616 is a wasteful number, since it uses less digits than its factorization.

57911616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 336 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 57911616 is about 7609.9681996707. The cubic root of 57911616 is about 386.8909413666.

The spelling of 57911616 in words is "fifty-seven million, nine hundred eleven thousand, six hundred sixteen".