54644215 has 4 divisors (see below), whose sum is σ = 65573064. Its totient is φ = 43715368.

The previous prime is 54644197. The next prime is 54644257. The reversal of 54644215 is 51244645.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51244645 = 5 ⋅10248929.

It is a cyclic number.

It is not a de Polignac number, because 54644215 - 2⁷ = 54644087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5464417 + ... + 5464426.

It is an arithmetic number, because the mean of its divisors is an integer number (16393266).

Almost surely, 2^54644215 is an apocalyptic number.

54644215 is a deficient number, since it is larger than the sum of its proper divisors (10928849).

54644215 is a wasteful number, since it uses less digits than its factorization.

54644215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10928848.

The product of its digits is 19200, while the sum is 31.

The square root of 54644215 is about 7392.1725493930. The cubic root of 54644215 is about 379.4734512394.

The spelling of 54644215 in words is "fifty-four million, six hundred forty-four thousand, two hundred fifteen".