57143136 has 48 divisors (see below), whose sum is σ = 151429824. Its totient is φ = 18866304.

The previous prime is 57143131. The next prime is 57143147. The reversal of 57143136 is 63134175.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57143131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7491 + ... + 13053.

It is an arithmetic number, because the mean of its divisors is an integer number (3154788).

Almost surely, 2^57143136 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 57143136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75714912).

57143136 is an abundant number, since it is smaller than the sum of its proper divisors (94286688).

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

57143136 is a wasteful number, since it uses less digits than its factorization.

57143136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5683 (or 5675 counting only the distinct ones).

The product of its digits is 7560, while the sum is 30.

The square root of 57143136 is about 7559.3079048283. The cubic root of 57143136 is about 385.1719836552.

The spelling of 57143136 in words is "fifty-seven million, one hundred forty-three thousand, one hundred thirty-six".