54681215 has 4 divisors (see below), whose sum is σ = 65617464. Its totient is φ = 43744968.

The previous prime is 54681191. The next prime is 54681217. The reversal of 54681215 is 51218645.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51218645 = 5 ⋅10243729.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54681215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54681217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5468117 + ... + 5468126.

It is an arithmetic number, because the mean of its divisors is an integer number (16404366).

Almost surely, 2^54681215 is an apocalyptic number.

54681215 is a deficient number, since it is larger than the sum of its proper divisors (10936249).

54681215 is a wasteful number, since it uses less digits than its factorization.

54681215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10936248.

The product of its digits is 9600, while the sum is 32.

The square root of 54681215 is about 7394.6747731053. The cubic root of 54681215 is about 379.5590800042.

The spelling of 54681215 in words is "fifty-four million, six hundred eighty-one thousand, two hundred fifteen".