57481021504 has 63 divisors (see below), whose sum is σ = 119330405103. Its totient is φ = 27469825152.

The previous prime is 57481021487. The next prime is 57481021523. The reversal of 57481021504 is 40512018475.

The square root of 57481021504 is 239752.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44113717 + ... + 44115019.

Almost surely, 2^57481021504 is an apocalyptic number.

57481021504 is the 239752-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57481021504

57481021504 is an abundant number, since it is smaller than the sum of its proper divisors (61849383599).

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

57481021504 is an frugal number, since it uses more digits than its factorization.

57481021504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

Adding to 57481021504 its reverse (40512018475), we get a palindrome (97993039979).

The spelling of 57481021504 in words is "fifty-seven billion, four hundred eighty-one million, twenty-one thousand, five hundred four".