57102012 has 72 divisors (see below), whose sum is σ = 161349552. Its totient is φ = 16876800.

The previous prime is 57101981. The next prime is 57102013. The reversal of 57102012 is 21020175.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57102013) 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, 14478 + ... + 17994.

It is an arithmetic number, because the mean of its divisors is an integer number (2240966).

Almost surely, 2^57102012 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 57102012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80674776).

57102012 is an abundant number, since it is smaller than the sum of its proper divisors (104247540).

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

57102012 is a wasteful number, since it uses less digits than its factorization.

57102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579 (or 3574 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 57102012 is about 7556.5873249768. The cubic root of 57102012 is about 385.0795630247.

Adding to 57102012 its reverse (21020175), we get a palindrome (78122187).

It can be divided in two parts, 5 and 7102012, that added together give a palindrome (7102017).

The spelling of 57102012 in words is "fifty-seven million, one hundred two thousand, twelve".