551500220215 has 12 divisors (see below), whose sum is σ = 769849287336. Its totient is φ = 378171579408.

The previous prime is 551500220179. The next prime is 551500220251. The reversal of 551500220215 is 512022005155.

It is an interprime number because it is at equal distance from previous prime (551500220179) and next prime (551500220251).

It is a de Polignac number, because none of the positive numbers 2^k-551500220215 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 11 ways as a sum of consecutive naturals, for example, 1125510409 + ... + 1125510898.

It is an arithmetic number, because the mean of its divisors is an integer number (64154107278).

Almost surely, 2^551500220215 is an apocalyptic number.

551500220215 is a deficient number, since it is larger than the sum of its proper divisors (218349067121).

551500220215 is a wasteful number, since it uses less digits than its factorization.

551500220215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251021326 (or 2251021319 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 551500220215 in words is "five hundred fifty-one billion, five hundred million, two hundred twenty thousand, two hundred fifteen".