55133315 has 16 divisors (see below), whose sum is σ = 68324256. Its totient is φ = 42681600.

The previous prime is 55133311. The next prime is 55133333. The reversal of 55133315 is 51333155.

It is not a de Polignac number, because 55133315 - 2² = 55133311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55133311) 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, 25829 + ... + 27881.

It is an arithmetic number, because the mean of its divisors is an integer number (4270266).

Almost surely, 2^55133315 is an apocalyptic number.

55133315 is a deficient number, since it is larger than the sum of its proper divisors (13190941).

55133315 is a wasteful number, since it uses less digits than its factorization.

55133315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230.

The product of its digits is 3375, while the sum is 26.

The square root of 55133315 is about 7425.1811425715. The cubic root of 55133315 is about 380.6022651822.

The spelling of 55133315 in words is "fifty-five million, one hundred thirty-three thousand, three hundred fifteen".