57749172 has 48 divisors (see below), whose sum is σ = 148505280. Its totient is φ = 17353728.

The previous prime is 57749161. The next prime is 57749173. The reversal of 57749172 is 27194775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57749173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2404 + ... + 11012.

It is an arithmetic number, because the mean of its divisors is an integer number (3093860).

Almost surely, 2^57749172 is an apocalyptic number.

57749172 is a gapful number since it is divisible by the number (52) 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 57749172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74252640).

57749172 is an abundant number, since it is smaller than the sum of its proper divisors (90756108).

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

57749172 is a wasteful number, since it uses less digits than its factorization.

57749172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8672 (or 8670 counting only the distinct ones).

The product of its digits is 123480, while the sum is 42.

The square root of 57749172 is about 7599.2875981897. The cubic root of 57749172 is about 386.5288553014.

The spelling of 57749172 in words is "fifty-seven million, seven hundred forty-nine thousand, one hundred seventy-two".