1215052522555 has 16 divisors (see below), whose sum is σ = 1470726653760. Its totient is φ = 963619126272.

The previous prime is 1215052522547. The next prime is 1215052522561. The reversal of 1215052522555 is 5552252505121.

It is a cyclic number.

It is not a de Polignac number, because 1215052522555 - 2³ = 1215052522547 is a prime.

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, 721950 + ... + 1717939.

It is an arithmetic number, because the mean of its divisors is an integer number (91920415860).

Almost surely, 2^{1215052522555} is an apocalyptic number.

1215052522555 is a deficient number, since it is larger than the sum of its proper divisors (255674131205).

1215052522555 is a wasteful number, since it uses less digits than its factorization.

1215052522555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440758.

The product of its (nonzero) digits is 250000, while the sum is 40.

The spelling of 1215052522555 in words is "one trillion, two hundred fifteen billion, fifty-two million, five hundred twenty-two thousand, five hundred fifty-five".