57781052 has 48 divisors (see below), whose sum is σ = 122384640. Its totient is φ = 23317632.

The previous prime is 57781027. The next prime is 57781067. The reversal of 57781052 is 25018775.

It is a congruent number.

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, 166343 + ... + 166689.

It is an arithmetic number, because the mean of its divisors is an integer number (2549680).

Almost surely, 2^57781052 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 57781052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61192320).

57781052 is an abundant number, since it is smaller than the sum of its proper divisors (64603588).

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

57781052 is a wasteful number, since it uses less digits than its factorization.

57781052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 57781052 is about 7601.3848738240. The cubic root of 57781052 is about 386.5999690083.

The spelling of 57781052 in words is "fifty-seven million, seven hundred eighty-one thousand, fifty-two".