55235815 has 16 divisors (see below), whose sum is σ = 68848416. Its totient is φ = 42508800.

The previous prime is 55235809. The next prime is 55235821. The reversal of 55235815 is 51853255.

It is an interprime number because it is at equal distance from previous prime (55235809) and next prime (55235821).

It is not a de Polignac number, because 55235815 - 2⁹ = 55235303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13120 + ... + 16810.

It is an arithmetic number, because the mean of its divisors is an integer number (4303026).

Almost surely, 2^55235815 is an apocalyptic number.

55235815 is a deficient number, since it is larger than the sum of its proper divisors (13612601).

55235815 is a wasteful number, since it uses less digits than its factorization.

55235815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810.

The product of its digits is 30000, while the sum is 34.

The square root of 55235815 is about 7432.0801260482. The cubic root of 55235815 is about 380.8379821962.

The spelling of 55235815 in words is "fifty-five million, two hundred thirty-five thousand, eight hundred fifteen".