54520247 has 4 divisors (see below), whose sum is σ = 54535320. Its totient is φ = 54505176.

The previous prime is 54520231. The next prime is 54520267. The reversal of 54520247 is 74202545.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 54520247 - 2⁴ = 54520231 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 (54520217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508 + ... + 10550.

It is an arithmetic number, because the mean of its divisors is an integer number (13633830).

Almost surely, 2^54520247 is an apocalyptic number.

54520247 is the 6029-th pentagonal number.

54520247 is a deficient number, since it is larger than the sum of its proper divisors (15073).

54520247 is an equidigital number, since it uses as much as digits as its factorization.

54520247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15072.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 54520247 is about 7383.7827026532. The cubic root of 54520247 is about 379.1862711972.

The spelling of 54520247 in words is "fifty-four million, five hundred twenty thousand, two hundred forty-seven".