55179145 has 12 divisors (see below), whose sum is σ = 77025924. Its totient is φ = 37836960.

The previous prime is 55179053. The next prime is 55179149. The reversal of 55179145 is 54197155.

It can be written as a sum of positive squares in 2 ways, for example, as 16540489 + 38638656 = 4067^2 + 6216^2 .

It is not a de Polignac number, because 55179145 - 2¹⁹ = 54654857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55179149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112366 + ... + 112855.

It is an arithmetic number, because the mean of its divisors is an integer number (6418827).

Almost surely, 2^55179145 is an apocalyptic number.

It is an amenable number.

55179145 is a deficient number, since it is larger than the sum of its proper divisors (21846779).

55179145 is a wasteful number, since it uses less digits than its factorization.

55179145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225240 (or 225233 counting only the distinct ones).

The product of its digits is 31500, while the sum is 37.

The square root of 55179145 is about 7428.2666214939. The cubic root of 55179145 is about 380.7076955125.

The spelling of 55179145 in words is "fifty-five million, one hundred seventy-nine thousand, one hundred forty-five".