1560555645 has 16 divisors (see below), whose sum is σ = 2723879232. Its totient is φ = 756632960.

The previous prime is 1560555599. The next prime is 1560555649. The reversal of 1560555645 is 5465550651.

It is not a de Polignac number, because 1560555645 - 2⁸ = 1560555389 is a prime.

It is a super-2 number, since 2×1560555645² = 4870667842282732050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1560555597 and 1560555606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1560555649) 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, 4728792 + ... + 4729121.

It is an arithmetic number, because the mean of its divisors is an integer number (170242452).

Almost surely, 2^1560555645 is an apocalyptic number.

1560555645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1560555645 is a deficient number, since it is larger than the sum of its proper divisors (1163323587).

1560555645 is a wasteful number, since it uses less digits than its factorization.

1560555645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9457932.

The product of its (nonzero) digits is 450000, while the sum is 42.

The square root of 1560555645 is about 39503.8687345936. The cubic root of 1560555645 is about 1159.9156808013.

The spelling of 1560555645 in words is "one billion, five hundred sixty million, five hundred fifty-five thousand, six hundred forty-five".