55072166 has 8 divisors (see below), whose sum is σ = 86199984. Its totient is φ = 26338840.

The previous prime is 55072159. The next prime is 55072181. The reversal of 55072166 is 66127055.

It is a happy number.

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

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, 598565 + ... + 598656.

It is an arithmetic number, because the mean of its divisors is an integer number (10774998).

Almost surely, 2^55072166 is an apocalyptic number.

55072166 is a deficient number, since it is larger than the sum of its proper divisors (31127818).

55072166 is a wasteful number, since it uses less digits than its factorization.

55072166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197246.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 55072166 is about 7421.0623228753. The cubic root of 55072166 is about 380.4615029981.

The spelling of 55072166 in words is "fifty-five million, seventy-two thousand, one hundred sixty-six".