54215615 has 8 divisors (see below), whose sum is σ = 65197440. Its totient is φ = 43280032.

The previous prime is 54215597. The next prime is 54215617. The reversal of 54215615 is 51651245.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 54215615 - 2¹⁶ = 54150079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54215617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8924 + ... + 13713.

It is an arithmetic number, because the mean of its divisors is an integer number (8149680).

Almost surely, 2^54215615 is an apocalyptic number.

54215615 is a deficient number, since it is larger than the sum of its proper divisors (10981825).

54215615 is a wasteful number, since it uses less digits than its factorization.

54215615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23121.

The product of its digits is 6000, while the sum is 29.

The square root of 54215615 is about 7363.1253554452. The cubic root of 54215615 is about 378.4787170281.

The spelling of 54215615 in words is "fifty-four million, two hundred fifteen thousand, six hundred fifteen".