54387247 has 4 divisors (see below), whose sum is σ = 54631360. Its totient is φ = 54143136.

The previous prime is 54387191. The next prime is 54387259. The reversal of 54387247 is 74278345.

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 54387247 - 2⁷ = 54387119 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 (54384247) 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, 121722 + ... + 122167.

It is an arithmetic number, because the mean of its divisors is an integer number (13657840).

Almost surely, 2^54387247 is an apocalyptic number.

54387247 is a deficient number, since it is larger than the sum of its proper divisors (244113).

54387247 is a wasteful number, since it uses less digits than its factorization.

54387247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244112.

The product of its digits is 188160, while the sum is 40.

The square root of 54387247 is about 7374.7709794949. The cubic root of 54387247 is about 378.8776834627.

The spelling of 54387247 in words is "fifty-four million, three hundred eighty-seven thousand, two hundred forty-seven".