57211752 has 64 divisors (see below), whose sum is σ = 154889280. Its totient is φ = 17505792.

The previous prime is 57211733. The next prime is 57211799. The reversal of 57211752 is 25711275.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72303 + ... + 73089.

It is an arithmetic number, because the mean of its divisors is an integer number (2420145).

Almost surely, 2^57211752 is an apocalyptic number.

57211752 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 57211752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77444640).

57211752 is an abundant number, since it is smaller than the sum of its proper divisors (97677528).

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

57211752 is a wasteful number, since it uses less digits than its factorization.

57211752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042 (or 1038 counting only the distinct ones).

The product of its digits is 4900, while the sum is 30.

The square root of 57211752 is about 7563.8450539392. The cubic root of 57211752 is about 385.3260901751.

The spelling of 57211752 in words is "fifty-seven million, two hundred eleven thousand, seven hundred fifty-two".