53117155 has 16 divisors (see below), whose sum is σ = 78450624. Its totient is φ = 33621120.

The previous prime is 53117111. The next prime is 53117161. The reversal of 53117155 is 55171135.

It is not a de Polignac number, because 53117155 - 2⁹ = 53116643 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57916 + ... + 58825.

It is an arithmetic number, because the mean of its divisors is an integer number (4903164).

Almost surely, 2^53117155 is an apocalyptic number.

53117155 is a deficient number, since it is larger than the sum of its proper divisors (25333469).

53117155 is a wasteful number, since it uses less digits than its factorization.

53117155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116766.

The product of its digits is 2625, while the sum is 28.

The square root of 53117155 is about 7288.1516861273. The cubic root of 53117155 is about 375.9051438515.

The spelling of 53117155 in words is "fifty-three million, one hundred seventeen thousand, one hundred fifty-five".