54200815 has 4 divisors (see below), whose sum is σ = 65040984. Its totient is φ = 43360648.

The previous prime is 54200801. The next prime is 54200827. The reversal of 54200815 is 51800245.

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 54200815 - 2⁹ = 54200303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54200815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5420077 + ... + 5420086.

It is an arithmetic number, because the mean of its divisors is an integer number (16260246).

Almost surely, 2^54200815 is an apocalyptic number.

54200815 is a deficient number, since it is larger than the sum of its proper divisors (10840169).

54200815 is a wasteful number, since it uses less digits than its factorization.

54200815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10840168.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 54200815 is about 7362.1202788327. The cubic root of 54200815 is about 378.4442743385. Note that the first 3 decimals are identical.

The spelling of 54200815 in words is "fifty-four million, two hundred thousand, eight hundred fifteen".