54515247 has 4 divisors (see below), whose sum is σ = 72687000. Its totient is φ = 36343496.

The previous prime is 54515231. The next prime is 54515269. The reversal of 54515247 is 74251545.

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 54515247 - 2⁴ = 54515231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54515947) 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, 9085872 + ... + 9085877.

It is an arithmetic number, because the mean of its divisors is an integer number (18171750).

Almost surely, 2^54515247 is an apocalyptic number.

54515247 is a deficient number, since it is larger than the sum of its proper divisors (18171753).

54515247 is a wasteful number, since it uses less digits than its factorization.

54515247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18171752.

The product of its digits is 28000, while the sum is 33.

The square root of 54515247 is about 7383.4441150455. Note that the first 3 decimals coincide. The cubic root of 54515247 is about 379.1746792387.

The spelling of 54515247 in words is "fifty-four million, five hundred fifteen thousand, two hundred forty-seven".