5551656215 has 16 divisors (see below), whose sum is σ = 7775695872. Its totient is φ = 3725852064.

The previous prime is 5551656199. The next prime is 5551656223. The reversal of 5551656215 is 5126561555.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5551656215 - 2⁴ = 5551656199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1685789 + ... + 1689078.

It is an arithmetic number, because the mean of its divisors is an integer number (485980992).

Almost surely, 2^5551656215 is an apocalyptic number.

5551656215 is a deficient number, since it is larger than the sum of its proper divisors (2224039657).

5551656215 is a wasteful number, since it uses less digits than its factorization.

5551656215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374926.

The product of its digits is 225000, while the sum is 41.

The square root of 5551656215 is about 74509.4370868550. The cubic root of 5551656215 is about 1770.6831515556.

The spelling of 5551656215 in words is "five billion, five hundred fifty-one million, six hundred fifty-six thousand, two hundred fifteen".