54215415 has 12 divisors (see below), whose sum is σ = 93973464. Its totient is φ = 28914864.

The previous prime is 54215377. The next prime is 54215423. The reversal of 54215415 is 51451245.

It is not a de Polignac number, because 54215415 - 2¹² = 54211319 is a prime.

It is a super-2 number, since 2×54215415² = 5878622447244450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 602349 + ... + 602438.

It is an arithmetic number, because the mean of its divisors is an integer number (7831122).

Almost surely, 2^54215415 is an apocalyptic number.

54215415 is a deficient number, since it is larger than the sum of its proper divisors (39758049).

54215415 is a wasteful number, since it uses less digits than its factorization.

54215415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204798 (or 1204795 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 54215415 is about 7363.1117742433. Note that the first 3 decimals coincide. The cubic root of 54215415 is about 378.4782516281.

The spelling of 54215415 in words is "fifty-four million, two hundred fifteen thousand, four hundred fifteen".