55167215 has 4 divisors (see below), whose sum is σ = 66200664. Its totient is φ = 44133768.

The previous prime is 55167209. The next prime is 55167221. The reversal of 55167215 is 51276155.

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

It is an interprime number because it is at equal distance from previous prime (55167209) and next prime (55167221).

It is a cyclic number.

It is not a de Polignac number, because 55167215 - 2⁸ = 55166959 is a prime.

It is a super-2 number, since 2×55167215² = 6086843221712450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5516717 + ... + 5516726.

It is an arithmetic number, because the mean of its divisors is an integer number (16550166).

Almost surely, 2^55167215 is an apocalyptic number.

55167215 is a deficient number, since it is larger than the sum of its proper divisors (11033449).

55167215 is a wasteful number, since it uses less digits than its factorization.

55167215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11033448.

The product of its digits is 10500, while the sum is 32.

The square root of 55167215 is about 7427.4635643670. The cubic root of 55167215 is about 380.6802565820.

The spelling of 55167215 in words is "fifty-five million, one hundred sixty-seven thousand, two hundred fifteen".