54213515 has 8 divisors (see below), whose sum is σ = 65156928. Its totient is φ = 43303680.

The previous prime is 54213491. The next prime is 54213539. The reversal of 54213515 is 51531245.

It is an interprime number because it is at equal distance from previous prime (54213491) and next prime (54213539).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-54213515 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4691 + ... + 11420.

It is an arithmetic number, because the mean of its divisors is an integer number (8144616).

Almost surely, 2^54213515 is an apocalyptic number.

54213515 is a deficient number, since it is larger than the sum of its proper divisors (10943413).

54213515 is a wasteful number, since it uses less digits than its factorization.

54213515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16789.

The product of its digits is 3000, while the sum is 26.

The square root of 54213515 is about 7362.9827515756. The cubic root of 54213515 is about 378.4738302713.

The spelling of 54213515 in words is "fifty-four million, two hundred thirteen thousand, five hundred fifteen".