55172306 has 32 divisors (see below), whose sum is σ = 97517952. Its totient is φ = 22919040.

The previous prime is 55172279. The next prime is 55172309. The reversal of 55172306 is 60327155.

It is not an unprimeable number, because it can be changed into a prime (55172309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158825 + ... + 159171.

It is an arithmetic number, because the mean of its divisors is an integer number (3047436).

Almost surely, 2^55172306 is an apocalyptic number.

55172306 is a deficient number, since it is larger than the sum of its proper divisors (42345646).

55172306 is a wasteful number, since it uses less digits than its factorization.

55172306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 55172306 is about 7427.8062710332. The cubic root of 55172306 is about 380.6919663362.

The spelling of 55172306 in words is "fifty-five million, one hundred seventy-two thousand, three hundred six".