57628323481 has 3 divisors (see below), whose sum is σ = 57628563541. Its totient is φ = 57628083422.

The previous prime is 57628323479. The next prime is 57628323499. The reversal of 57628323481 is 18432382675.

The square root of 57628323481 is 240059.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 57628323481 - 2¹ = 57628323479 is a prime.

It is a super-2 number, since 2×57628323481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57628329481) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 120030 + ... + 360088.

Almost surely, 2^57628323481 is an apocalyptic number.

57628323481 is the 240059-th square number.

57628323481 is the 120030-th centered octagonal number.

It is an amenable number.

57628323481 is a deficient number, since it is larger than the sum of its proper divisors (240060).

57628323481 is an frugal number, since it uses more digits than its factorization.

57628323481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480118 (or 240059 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

Multiplying 57628323481 by its sum of digits (49), we get a square (2823787850569 = 1680413²).

The spelling of 57628323481 in words is "fifty-seven billion, six hundred twenty-eight million, three hundred twenty-three thousand, four hundred eighty-one".