54199511 has 4 divisors (see below), whose sum is σ = 54345192. Its totient is φ = 54053832.

The previous prime is 54199469. The next prime is 54199517. The reversal of 54199511 is 11599145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11599145 = 5 ⋅2319829.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54199511 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 (54199517) 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, 72281 + ... + 73026.

It is an arithmetic number, because the mean of its divisors is an integer number (13586298).

Almost surely, 2^54199511 is an apocalyptic number.

54199511 is a deficient number, since it is larger than the sum of its proper divisors (145681).

54199511 is a wasteful number, since it uses less digits than its factorization.

54199511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145680.

The product of its digits is 8100, while the sum is 35.

The square root of 54199511 is about 7362.0317168564. The cubic root of 54199511 is about 378.4412393577.

The spelling of 54199511 in words is "fifty-four million, one hundred ninety-nine thousand, five hundred eleven".