55166969 has 8 divisors (see below), whose sum is σ = 64811712. Its totient is φ = 46293840.

The previous prime is 55166959. The next prime is 55166977. The reversal of 55166969 is 96966155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55166969 - 2²⁴ = 38389753 is a prime.

It is a super-2 number, since 2×55166969² = 6086788937293922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55166959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192749 + ... + 193034.

It is an arithmetic number, because the mean of its divisors is an integer number (8101464).

Almost surely, 2^55166969 is an apocalyptic number.

It is an amenable number.

55166969 is a deficient number, since it is larger than the sum of its proper divisors (9644743).

55166969 is a wasteful number, since it uses less digits than its factorization.

55166969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385807.

The product of its digits is 437400, while the sum is 47.

The square root of 55166969 is about 7427.4470041866. The cubic root of 55166969 is about 380.6796907418.

The spelling of 55166969 in words is "fifty-five million, one hundred sixty-six thousand, nine hundred sixty-nine".