57147012 has 144 divisors (see below), whose sum is σ = 167247360. Its totient is φ = 16848000.

The previous prime is 57147001. The next prime is 57147017. The reversal of 57147012 is 21074175.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (57147017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 565762 + ... + 565862.

It is an arithmetic number, because the mean of its divisors is an integer number (1161440).

Almost surely, 2^57147012 is an apocalyptic number.

57147012 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 57147012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83623680).

57147012 is an abundant number, since it is smaller than the sum of its proper divisors (110100348).

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

57147012 is a wasteful number, since it uses less digits than its factorization.

57147012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 57147012 is about 7559.5642731575. The cubic root of 57147012 is about 385.1806921544.

The spelling of 57147012 in words is "fifty-seven million, one hundred forty-seven thousand, twelve".