55215159 has 16 divisors (see below), whose sum is σ = 80169600. Its totient is φ = 33669216.

The previous prime is 55215119. The next prime is 55215161. The reversal of 55215159 is 95151255.

It is not a de Polignac number, because 55215159 - 2¹¹ = 55213111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55215119) 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, 15049 + ... + 18354.

It is an arithmetic number, because the mean of its divisors is an integer number (5010600).

Almost surely, 2^55215159 is an apocalyptic number.

55215159 is a deficient number, since it is larger than the sum of its proper divisors (24954441).

55215159 is a wasteful number, since it uses less digits than its factorization.

55215159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33454.

The product of its digits is 11250, while the sum is 33.

The square root of 55215159 is about 7430.6903447795. The cubic root of 55215159 is about 380.7905035198.

The spelling of 55215159 in words is "fifty-five million, two hundred fifteen thousand, one hundred fifty-nine".