55210173 has 4 divisors (see below), whose sum is σ = 73613568. Its totient is φ = 36806780.

The previous prime is 55210139. The next prime is 55210193. The reversal of 55210173 is 37101255.

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 55210173 - 2¹⁶ = 55144637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55210123) 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, 9201693 + ... + 9201698.

It is an arithmetic number, because the mean of its divisors is an integer number (18403392).

Almost surely, 2^55210173 is an apocalyptic number.

It is an amenable number.

55210173 is a deficient number, since it is larger than the sum of its proper divisors (18403395).

55210173 is a wasteful number, since it uses less digits than its factorization.

55210173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18403394.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 55210173 is about 7430.3548367490. The cubic root of 55210173 is about 380.7790412171.

The spelling of 55210173 in words is "fifty-five million, two hundred ten thousand, one hundred seventy-three".