55166379 has 4 divisors (see below), whose sum is σ = 73555176. Its totient is φ = 36777584.

The previous prime is 55166359. The next prime is 55166401. The reversal of 55166379 is 97366155.

It is a happy number.

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 55166379 - 2¹¹ = 55164331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55166379.

It is not an unprimeable number, because it can be changed into a prime (55166359) 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, 9194394 + ... + 9194399.

It is an arithmetic number, because the mean of its divisors is an integer number (18388794).

Almost surely, 2^55166379 is an apocalyptic number.

55166379 is a deficient number, since it is larger than the sum of its proper divisors (18388797).

55166379 is a wasteful number, since it uses less digits than its factorization.

55166379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18388796.

The product of its digits is 170100, while the sum is 42.

The square root of 55166379 is about 7427.4072865301. The cubic root of 55166379 is about 380.6783336386.

The spelling of 55166379 in words is "fifty-five million, one hundred sixty-six thousand, three hundred seventy-nine".