53551911 has 16 divisors (see below), whose sum is σ = 84236288. Its totient is φ = 29613600.

The previous prime is 53551909. The next prime is 53551919. The reversal of 53551911 is 11915535.

It is not a de Polignac number, because 53551911 - 2¹ = 53551909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53551919) 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, 40480 + ... + 41781.

It is an arithmetic number, because the mean of its divisors is an integer number (5264768).

Almost surely, 2^53551911 is an apocalyptic number.

53551911 is a deficient number, since it is larger than the sum of its proper divisors (30684377).

53551911 is a wasteful number, since it uses less digits than its factorization.

53551911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82302.

The product of its digits is 3375, while the sum is 30.

The square root of 53551911 is about 7317.9171216952. The cubic root of 53551911 is about 376.9279343098.

The spelling of 53551911 in words is "fifty-three million, five hundred fifty-one thousand, nine hundred eleven".