55253215 has 8 divisors (see below), whose sum is σ = 66582720. Its totient is φ = 44016672.

The previous prime is 55253147. The next prime is 55253221. The reversal of 55253215 is 51235255.

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 55253215 - 2¹¹ = 55251167 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21924 + ... + 24313.

It is an arithmetic number, because the mean of its divisors is an integer number (8322840).

Almost surely, 2^55253215 is an apocalyptic number.

55253215 is a deficient number, since it is larger than the sum of its proper divisors (11329505).

55253215 is a wasteful number, since it uses less digits than its factorization.

55253215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46481.

The product of its digits is 7500, while the sum is 28.

The square root of 55253215 is about 7433.2506348165. The cubic root of 55253215 is about 380.8779676368.

The spelling of 55253215 in words is "fifty-five million, two hundred fifty-three thousand, two hundred fifteen".