55542993 has 24 divisors (see below), whose sum is σ = 82966464. Its totient is φ = 33015840.

The previous prime is 55542967. The next prime is 55542997. The reversal of 55542993 is 39924555.

55542993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55542993 - 2¹⁷ = 55411921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55542997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17796 + ... + 20682.

It is an arithmetic number, because the mean of its divisors is an integer number (3456936).

Almost surely, 2^55542993 is an apocalyptic number.

55542993 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

55542993 is a deficient number, since it is larger than the sum of its proper divisors (27423471).

55542993 is a wasteful number, since it uses less digits than its factorization.

55542993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965 (or 2954 counting only the distinct ones).

The product of its digits is 243000, while the sum is 42.

The square root of 55542993 is about 7452.7171555078. The cubic root of 55542993 is about 381.5426509438.

The spelling of 55542993 in words is "fifty-five million, five hundred forty-two thousand, nine hundred ninety-three".