55815033 has 16 divisors (see below), whose sum is σ = 75579840. Its totient is φ = 36635136.

The previous prime is 55815031. The next prime is 55815041. The reversal of 55815033 is 33051855.

It is not a de Polignac number, because 55815033 - 2¹ = 55815031 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55815031) 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, 56641 + ... + 57617.

It is an arithmetic number, because the mean of its divisors is an integer number (4723740).

Almost surely, 2^55815033 is an apocalyptic number.

It is an amenable number.

55815033 is a deficient number, since it is larger than the sum of its proper divisors (19764807).

55815033 is a wasteful number, since it uses less digits than its factorization.

55815033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 55815033 is about 7470.9459240447. The cubic root of 55815033 is about 382.1645467660.

Adding to 55815033 its reverse (33051855), we get a palindrome (88866888).

The spelling of 55815033 in words is "fifty-five million, eight hundred fifteen thousand, thirty-three".