53181121 has 8 divisors (see below), whose sum is σ = 62019200. Its totient is φ = 45583524.

The previous prime is 53181113. The next prime is 53181131. The reversal of 53181121 is 12118135.

It is not a de Polignac number, because 53181121 - 2³ = 53181113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53181092 and 53181101.

It is not an unprimeable number, because it can be changed into a prime (53181131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77181 + ... + 77866.

It is an arithmetic number, because the mean of its divisors is an integer number (7752400).

Almost surely, 2^53181121 is an apocalyptic number.

It is an amenable number.

53181121 is a deficient number, since it is larger than the sum of its proper divisors (8838079).

53181121 is an equidigital number, since it uses as much as digits as its factorization.

53181121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155068 (or 155054 counting only the distinct ones).

The product of its digits is 240, while the sum is 22.

The square root of 53181121 is about 7292.5387211862. The cubic root of 53181121 is about 376.0559771232.

Adding to 53181121 its reverse (12118135), we get a palindrome (65299256).

The spelling of 53181121 in words is "fifty-three million, one hundred eighty-one thousand, one hundred twenty-one".