55210500215 has 16 divisors (see below), whose sum is σ = 71491980000. Its totient is φ = 40689101952.

The previous prime is 55210500139. The next prime is 55210500227. The reversal of 55210500215 is 51200501255.

It is a cyclic number.

It is not a de Polignac number, because 55210500215 - 2¹⁶ = 55210434679 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, 818660 + ... + 883529.

It is an arithmetic number, because the mean of its divisors is an integer number (4468248750).

Almost surely, 2^55210500215 is an apocalyptic number.

55210500215 is a deficient number, since it is larger than the sum of its proper divisors (16281479785).

55210500215 is a wasteful number, since it uses less digits than its factorization.

55210500215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702706.

The product of its (nonzero) digits is 2500, while the sum is 26.

The spelling of 55210500215 in words is "fifty-five billion, two hundred ten million, five hundred thousand, two hundred fifteen".