55131933 has 8 divisors (see below), whose sum is σ = 73552896. Its totient is φ = 36732800.

The previous prime is 55131911. The next prime is 55131953. The reversal of 55131933 is 33913155.

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 55131933 - 2¹⁰ = 55130909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55131933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55131953) 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, 1828 + ... + 10658.

It is an arithmetic number, because the mean of its divisors is an integer number (9194112).

Almost surely, 2^55131933 is an apocalyptic number.

It is an amenable number.

55131933 is a deficient number, since it is larger than the sum of its proper divisors (18420963).

55131933 is a wasteful number, since it uses less digits than its factorization.

55131933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10915.

The product of its digits is 6075, while the sum is 30.

The square root of 55131933 is about 7425.0880802856. The cubic root of 55131933 is about 380.5990850316.

The spelling of 55131933 in words is "fifty-five million, one hundred thirty-one thousand, nine hundred thirty-three".