1564215045 has 16 divisors (see below), whose sum is σ = 2504415552. Its totient is φ = 833690880.

The previous prime is 1564215011. The next prime is 1564215047. The reversal of 1564215045 is 5405124651.

It is not a de Polignac number, because 1564215045 - 2¹⁰ = 1564214021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1564214997 and 1564215015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1564215047) 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, 11092 + ... + 57021.

It is an arithmetic number, because the mean of its divisors is an integer number (156525972).

Almost surely, 2^1564215045 is an apocalyptic number.

1564215045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1564215045 is a deficient number, since it is larger than the sum of its proper divisors (940200507).

1564215045 is a wasteful number, since it uses less digits than its factorization.

1564215045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69652.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 1564215045 is about 39550.1585963950. The cubic root of 1564215045 is about 1160.8216149592.

Adding to 1564215045 its reverse (5405124651), we get a palindrome (6969339696).

The spelling of 1564215045 in words is "one billion, five hundred sixty-four million, two hundred fifteen thousand, forty-five".