55182993 has 4 divisors (see below), whose sum is σ = 73577328. Its totient is φ = 36788660.

The previous prime is 55182991. The next prime is 55182997. The reversal of 55182993 is 39928155.

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.

It is a cyclic number.

It is not a de Polignac number, because 55182993 - 2¹ = 55182991 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55182991) 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, 9197163 + ... + 9197168.

It is an arithmetic number, because the mean of its divisors is an integer number (18394332).

Almost surely, 2^55182993 is an apocalyptic number.

It is an amenable number.

55182993 is a deficient number, since it is larger than the sum of its proper divisors (18394335).

55182993 is a wasteful number, since it uses less digits than its factorization.

55182993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18394334.

The product of its digits is 97200, while the sum is 42.

The square root of 55182993 is about 7428.5256276061. The cubic root of 55182993 is about 380.7165450465.

The spelling of 55182993 in words is "fifty-five million, one hundred eighty-two thousand, nine hundred ninety-three".