55813933 has 4 divisors (see below), whose sum is σ = 63787360. Its totient is φ = 47840508.

The previous prime is 55813903. The next prime is 55813943. The reversal of 55813933 is 33931855.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33931855 = 5 ⋅6786371.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55813933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55813892 and 55813901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55813903) 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, 3986703 + ... + 3986716.

It is an arithmetic number, because the mean of its divisors is an integer number (15946840).

Almost surely, 2^55813933 is an apocalyptic number.

It is an amenable number.

55813933 is a deficient number, since it is larger than the sum of its proper divisors (7973427).

55813933 is an equidigital number, since it uses as much as digits as its factorization.

55813933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7973426.

The product of its digits is 48600, while the sum is 37.

The square root of 55813933 is about 7470.8723051596. The cubic root of 55813933 is about 382.1620361893.

The spelling of 55813933 in words is "fifty-five million, eight hundred thirteen thousand, nine hundred thirty-three".