57563020 has 72 divisors (see below), whose sum is σ = 134303904. Its totient is φ = 20680704.

The previous prime is 57563017. The next prime is 57563029. The reversal of 57563020 is 2036575.

It is a self number, because there is not a number n which added to its sum of digits gives 57563020.

It is not an unprimeable number, because it can be changed into a prime (57563029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132724 + ... + 133156.

It is an arithmetic number, because the mean of its divisors is an integer number (1865332).

Almost surely, 2^57563020 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 57563020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67151952).

57563020 is an abundant number, since it is smaller than the sum of its proper divisors (76740884).

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

57563020 is a wasteful number, since it uses less digits than its factorization.

57563020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 57563020 is about 7587.0297218345. The cubic root of 57563020 is about 386.1130884697.

Adding to 57563020 its reverse (2036575), we get a palindrome (59599595).

The spelling of 57563020 in words is "fifty-seven million, five hundred sixty-three thousand, twenty".