57855402 has 48 divisors (see below), whose sum is σ = 139681152. Its totient is φ = 17156160.

The previous prime is 57855397. The next prime is 57855407. The reversal of 57855402 is 20455875.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (57855397) and next prime (57855407).

It is not an unprimeable number, because it can be changed into a prime (57855407) 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, 6198 + ... + 12414.

It is an arithmetic number, because the mean of its divisors is an integer number (2910024).

Almost surely, 2^57855402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57855402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69840576).

57855402 is an abundant number, since it is smaller than the sum of its proper divisors (81825750).

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

57855402 is a wasteful number, since it uses less digits than its factorization.

57855402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6283 (or 6280 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 57855402 is about 7606.2738578097. The cubic root of 57855402 is about 386.7657176221.

The spelling of 57855402 in words is "fifty-seven million, eight hundred fifty-five thousand, four hundred two".