55751332331 has 4 divisors (see below), whose sum is σ = 58685613000. Its totient is φ = 52817051664.

The previous prime is 55751332327. The next prime is 55751332349. The reversal of 55751332331 is 13323315755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55751332331 - 2² = 55751332327 is a prime.

It is a super-2 number, since 2×55751332331² (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 (55751332321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1467140306 + ... + 1467140343.

It is an arithmetic number, because the mean of its divisors is an integer number (14671403250).

Almost surely, 2^55751332331 is an apocalyptic number.

55751332331 is a deficient number, since it is larger than the sum of its proper divisors (2934280669).

55751332331 is a wasteful number, since it uses less digits than its factorization.

55751332331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934280668.

The product of its digits is 141750, while the sum is 38.

The spelling of 55751332331 in words is "fifty-five billion, seven hundred fifty-one million, three hundred thirty-two thousand, three hundred thirty-one".