54511287 has 4 divisors (see below), whose sum is σ = 72681720. Its totient is φ = 36340856.

The previous prime is 54511277. The next prime is 54511291. The reversal of 54511287 is 78211545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54511287 - 2⁷ = 54511159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54511207) 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, 9085212 + ... + 9085217.

It is an arithmetic number, because the mean of its divisors is an integer number (18170430).

Almost surely, 2^54511287 is an apocalyptic number.

54511287 is a deficient number, since it is larger than the sum of its proper divisors (18170433).

54511287 is a wasteful number, since it uses less digits than its factorization.

54511287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18170432.

The product of its digits is 11200, while the sum is 33.

The square root of 54511287 is about 7383.1759426415. The cubic root of 54511287 is about 379.1654979046.

The spelling of 54511287 in words is "fifty-four million, five hundred eleven thousand, two hundred eighty-seven".