54578615 has 16 divisors (see below), whose sum is σ = 80609088. Its totient is φ = 34546176.

The previous prime is 54578603. The next prime is 54578617. The reversal of 54578615 is 51687545.

It is a de Polignac number, because none of the positive numbers 2^k-54578615 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54578617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59522 + ... + 60431.

It is an arithmetic number, because the mean of its divisors is an integer number (5038068).

Almost surely, 2^54578615 is an apocalyptic number.

54578615 is a deficient number, since it is larger than the sum of its proper divisors (26030473).

54578615 is a wasteful number, since it uses less digits than its factorization.

54578615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119978.

The product of its digits is 168000, while the sum is 41.

The square root of 54578615 is about 7387.7340910458. The cubic root of 54578615 is about 379.3215386869.

The spelling of 54578615 in words is "fifty-four million, five hundred seventy-eight thousand, six hundred fifteen".