1564064255 has 8 divisors (see below), whose sum is σ = 2021252352. Its totient is φ = 1155001248.

The previous prime is 1564064251. The next prime is 1564064273. The reversal of 1564064255 is 5524604651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1564064255 - 2² = 1564064251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1564064251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12031199 + ... + 12031328.

It is an arithmetic number, because the mean of its divisors is an integer number (252656544).

Almost surely, 2^1564064255 is an apocalyptic number.

1564064255 is a deficient number, since it is larger than the sum of its proper divisors (457188097).

1564064255 is a wasteful number, since it uses less digits than its factorization.

1564064255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24062545.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 1564064255 is about 39548.2522369826. The cubic root of 1564064255 is about 1160.7843127744.

The spelling of 1564064255 in words is "one billion, five hundred sixty-four million, sixty-four thousand, two hundred fifty-five".