55220052215 has 16 divisors (see below), whose sum is σ = 66414871200. Its totient is φ = 44075601792.

The previous prime is 55220052187. The next prime is 55220052229. The reversal of 55220052215 is 51225002255.

It is a cyclic number.

It is not a de Polignac number, because 55220052215 - 2¹² = 55220048119 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, 5531969 + ... + 5541941.

It is an arithmetic number, because the mean of its divisors is an integer number (4150929450).

Almost surely, 2^55220052215 is an apocalyptic number.

55220052215 is a deficient number, since it is larger than the sum of its proper divisors (11194818985).

55220052215 is a wasteful number, since it uses less digits than its factorization.

55220052215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12386.

The product of its (nonzero) digits is 10000, while the sum is 29.

The spelling of 55220052215 in words is "fifty-five billion, two hundred twenty million, fifty-two thousand, two hundred fifteen".