55042973 has 4 divisors (see below), whose sum is σ = 55407648. Its totient is φ = 54678300.

The previous prime is 55042961. The next prime is 55043039. The reversal of 55042973 is 37924055.

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 55042973 - 2⁶ = 55042909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55042873) 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, 182111 + ... + 182412.

It is an arithmetic number, because the mean of its divisors is an integer number (13851912).

Almost surely, 2^55042973 is an apocalyptic number.

It is an amenable number.

55042973 is a deficient number, since it is larger than the sum of its proper divisors (364675).

55042973 is a wasteful number, since it uses less digits than its factorization.

55042973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364674.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 55042973 is about 7419.0951604626. The cubic root of 55042973 is about 380.3942653076.

The spelling of 55042973 in words is "fifty-five million, forty-two thousand, nine hundred seventy-three".