57220752724 has 6 divisors (see below), whose sum is σ = 100136317274. Its totient is φ = 28610376360.

The previous prime is 57220752707. The next prime is 57220752737. The reversal of 57220752724 is 42725702275.

It can be written as a sum of positive squares in only one way, i.e., 50485596100 + 6735156624 = 224690^2 + 82068^2 .

It is a super-3 number, since 3×57220752724³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7152594087 + ... + 7152594094.

Almost surely, 2^57220752724 is an apocalyptic number.

It is an amenable number.

57220752724 is a deficient number, since it is larger than the sum of its proper divisors (42915564550).

57220752724 is a wasteful number, since it uses less digits than its factorization.

57220752724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14305188185 (or 14305188183 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 43.

The spelling of 57220752724 in words is "fifty-seven billion, two hundred twenty million, seven hundred fifty-two thousand, seven hundred twenty-four".