57227520 has 144 divisors (see below), whose sum is σ = 208978560. Its totient is φ = 13074432.

The previous prime is 57227501. The next prime is 57227543. The reversal of 57227520 is 2572275.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25816 + ... + 27944.

It is an arithmetic number, because the mean of its divisors is an integer number (1451240).

Almost surely, 2^57227520 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 57227520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104489280).

57227520 is an abundant number, since it is smaller than the sum of its proper divisors (151751040).

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

57227520 is a wasteful number, since it uses less digits than its factorization.

57227520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160 (or 2146 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 57227520 is about 7564.8873091408. The cubic root of 57227520 is about 385.3614865374.

Adding to 57227520 its reverse (2572275), we get a palindrome (59799795).

The spelling of 57227520 in words is "fifty-seven million, two hundred twenty-seven thousand, five hundred twenty".