57140802 has 40 divisors (see below), whose sum is σ = 131511996. Its totient is φ = 18530208.

The previous prime is 57140801. The next prime is 57140803. The reversal of 57140802 is 20804175.

It is an interprime number because it is at equal distance from previous prime (57140801) and next prime (57140803).

It can be written as a sum of positive squares in 2 ways, for example, as 57017601 + 123201 = 7551^2 + 351^2 .

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 (57140801) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1228 + ... + 10760.

Almost surely, 2^57140802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57140802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65755998).

57140802 is an abundant number, since it is smaller than the sum of its proper divisors (74371194).

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

57140802 is a wasteful number, since it uses less digits than its factorization.

57140802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9584 (or 9575 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 57140802 is about 7559.1535240396. The cubic root of 57140802 is about 385.1667394929.

Adding to 57140802 its reverse (20804175), we get a palindrome (77944977).

The spelling of 57140802 in words is "fifty-seven million, one hundred forty thousand, eight hundred two".