55352173 has 4 divisors (see below), whose sum is σ = 56702268. Its totient is φ = 54002080.

The previous prime is 55352123. The next prime is 55352183. The reversal of 55352173 is 37125355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1447209 + 53904964 = 1203^2 + 7342^2 .

It is a cyclic number.

It is not a de Polignac number, because 55352173 - 2²¹ = 53255021 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 (55352123) 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, 674986 + ... + 675067.

It is an arithmetic number, because the mean of its divisors is an integer number (14175567).

Almost surely, 2^55352173 is an apocalyptic number.

It is an amenable number.

55352173 is a deficient number, since it is larger than the sum of its proper divisors (1350095).

55352173 is a wasteful number, since it uses less digits than its factorization.

55352173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350094.

The product of its digits is 15750, while the sum is 31.

The square root of 55352173 is about 7439.9040988443. The cubic root of 55352173 is about 381.1052150040.

The spelling of 55352173 in words is "fifty-five million, three hundred fifty-two thousand, one hundred seventy-three".