54115231 has 4 divisors (see below), whose sum is σ = 54460072. Its totient is φ = 53770392.

The previous prime is 54115223. The next prime is 54115241. The reversal of 54115231 is 13251145.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13251145 = 5 ⋅2650229.

It is a cyclic number.

It is not a de Polignac number, because 54115231 - 2³ = 54115223 is a prime.

It is a super-2 number, since 2×54115231² = 5856916452366722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54115241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172185 + ... + 172498.

It is an arithmetic number, because the mean of its divisors is an integer number (13615018).

Almost surely, 2^54115231 is an apocalyptic number.

54115231 is a deficient number, since it is larger than the sum of its proper divisors (344841).

54115231 is a wasteful number, since it uses less digits than its factorization.

54115231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344840.

The product of its digits is 600, while the sum is 22.

The square root of 54115231 is about 7356.3055265534. The cubic root of 54115231 is about 378.2449794434.

Adding to 54115231 its reverse (13251145), we get a palindrome (67366376).

The spelling of 54115231 in words is "fifty-four million, one hundred fifteen thousand, two hundred thirty-one".