57020814 has 32 divisors (see below), whose sum is σ = 127491840. Its totient is φ = 18890136.

The previous prime is 57020813. The next prime is 57020833. The reversal of 57020814 is 41802075.

It is a super-3 number, since 3×57020814³ (a number of 24 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57020813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5857 + ... + 12179.

It is an arithmetic number, because the mean of its divisors is an integer number (3984120).

Almost surely, 2^57020814 is an apocalyptic number.

57020814 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

57020814 is an abundant number, since it is smaller than the sum of its proper divisors (70471026).

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

57020814 is a wasteful number, since it uses less digits than its factorization.

57020814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6501 (or 6495 counting only the distinct ones).

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

The square root of 57020814 is about 7551.2127502806. The cubic root of 57020814 is about 384.8969511128.

Adding to 57020814 its reverse (41802075), we get a palindrome (98822889).

The spelling of 57020814 in words is "fifty-seven million, twenty thousand, eight hundred fourteen".