55051215 has 8 divisors (see below), whose sum is σ = 88081968. Its totient is φ = 29360640.

The previous prime is 55051207. The next prime is 55051231. The reversal of 55051215 is 51215055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55051215 - 2³ = 55051207 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, 1835026 + ... + 1835055.

It is an arithmetic number, because the mean of its divisors is an integer number (11010246).

Almost surely, 2^55051215 is an apocalyptic number.

55051215 is a deficient number, since it is larger than the sum of its proper divisors (33030753).

55051215 is a wasteful number, since it uses less digits than its factorization.

55051215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3670089.

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 55051215 is about 7419.6505982425. The cubic root of 55051215 is about 380.4132507953.

The spelling of 55051215 in words is "fifty-five million, fifty-one thousand, two hundred fifteen".