1564115255 has 16 divisors (see below), whose sum is σ = 1898095680. Its totient is φ = 1237225728.

The previous prime is 1564115251. The next prime is 1564115257. The reversal of 1564115255 is 5525114651.

It is a cyclic number.

It is not a de Polignac number, because 1564115255 - 2² = 1564115251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1564115251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396131 + ... + 400059.

It is an arithmetic number, because the mean of its divisors is an integer number (118630980).

Almost surely, 2^1564115255 is an apocalyptic number.

1564115255 is a deficient number, since it is larger than the sum of its proper divisors (333980425).

1564115255 is a wasteful number, since it uses less digits than its factorization.

1564115255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4810.

The product of its digits is 30000, while the sum is 35.

The square root of 1564115255 is about 39548.8970136969. The cubic root of 1564115255 is about 1160.7969293397.

The spelling of 1564115255 in words is "one billion, five hundred sixty-four million, one hundred fifteen thousand, two hundred fifty-five".