57152020 has 24 divisors (see below), whose sum is σ = 122286024. Its totient is φ = 22429056.

The previous prime is 57151999. The next prime is 57152021. The reversal of 57152020 is 2025175.

It can be written as a sum of positive squares in 4 ways, for example, as 1976836 + 55175184 = 1406^2 + 7428^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57151982 and 57152000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57152021) 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, 25899 + ... + 28018.

It is an arithmetic number, because the mean of its divisors is an integer number (5095251).

Almost surely, 2^57152020 is an apocalyptic number.

It is an amenable number.

57152020 is an abundant number, since it is smaller than the sum of its proper divisors (65134004).

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

57152020 is a wasteful number, since it uses less digits than its factorization.

57152020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53979 (or 53977 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 57152020 is about 7559.8955019233. The cubic root of 57152020 is about 385.1919434196.

Adding to 57152020 its reverse (2025175), we get a palindrome (59177195).

The spelling of 57152020 in words is "fifty-seven million, one hundred fifty-two thousand, twenty".