55001173 has 2 divisors, whose sum is σ = 55001174. Its totient is φ = 55001172.

The previous prime is 55001147. The next prime is 55001207. The reversal of 55001173 is 37110055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53904964 + 1096209 = 7342^2 + 1047^2 .

It is a cyclic number.

It is not a de Polignac number, because 55001173 - 2²¹ = 52904021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55001123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27500586 + 27500587.

It is an arithmetic number, because the mean of its divisors is an integer number (27500587).

Almost surely, 2^55001173 is an apocalyptic number.

It is an amenable number.

55001173 is a deficient number, since it is larger than the sum of its proper divisors (1).

55001173 is an equidigital number, since it uses as much as digits as its factorization.

55001173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 55001173 is about 7416.2775703179. The cubic root of 55001173 is about 380.2979496104.

The spelling of 55001173 in words is "fifty-five million, one thousand, one hundred seventy-three".