54723815 has 4 divisors (see below), whose sum is σ = 65668584. Its totient is φ = 43779048.

The previous prime is 54723787. The next prime is 54723817. The reversal of 54723815 is 51832745.

It is a happy number.

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 54723815 - 2⁶ = 54723751 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 (54723817) 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, 5472377 + ... + 5472386.

It is an arithmetic number, because the mean of its divisors is an integer number (16417146).

Almost surely, 2^54723815 is an apocalyptic number.

54723815 is a deficient number, since it is larger than the sum of its proper divisors (10944769).

54723815 is a wasteful number, since it uses less digits than its factorization.

54723815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10944768.

The product of its digits is 33600, while the sum is 35.

The square root of 54723815 is about 7397.5546635358. The cubic root of 54723815 is about 379.6576209729.

The spelling of 54723815 in words is "fifty-four million, seven hundred twenty-three thousand, eight hundred fifteen".