55772520331 has 8 divisors (see below), whose sum is σ = 61230284784. Its totient is φ = 50379345120.

The previous prime is 55772520299. The next prime is 55772520337. The reversal of 55772520331 is 13302527755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55772520331 - 2⁵ = 55772520299 is a prime.

It is a super-2 number, since 2×55772520331² (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 (55772520337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16145500 + ... + 16148953.

It is an arithmetic number, because the mean of its divisors is an integer number (7653785598).

Almost surely, 2^55772520331 is an apocalyptic number.

55772520331 is a deficient number, since it is larger than the sum of its proper divisors (5457764453).

55772520331 is a wasteful number, since it uses less digits than its factorization.

55772520331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32294621.

The product of its (nonzero) digits is 220500, while the sum is 40.

The spelling of 55772520331 in words is "fifty-five billion, seven hundred seventy-two million, five hundred twenty thousand, three hundred thirty-one".