55173967 has 4 divisors (see below), whose sum is σ = 58077880. Its totient is φ = 52270056.

The previous prime is 55173953. The next prime is 55173973. The reversal of 55173967 is 76937155.

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

It is a cyclic number.

It is not a de Polignac number, because 55173967 - 2²³ = 46785359 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 (55173917) 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, 1451928 + ... + 1451965.

It is an arithmetic number, because the mean of its divisors is an integer number (14519470).

Almost surely, 2^55173967 is an apocalyptic number.

55173967 is a deficient number, since it is larger than the sum of its proper divisors (2903913).

55173967 is a wasteful number, since it uses less digits than its factorization.

55173967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2903912.

The product of its digits is 198450, while the sum is 43.

The square root of 55173967 is about 7427.9180797852. The cubic root of 55173967 is about 380.6957866285.

The spelling of 55173967 in words is "fifty-five million, one hundred seventy-three thousand, nine hundred sixty-seven".