1565561152 has 56 divisors (see below), whose sum is σ = 3139025472. Its totient is φ = 774681600.

The previous prime is 1565561113. The next prime is 1565561159. The reversal of 1565561152 is 2511655651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1565561159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4729627 + ... + 4729957.

Almost surely, 2^1565561152 is an apocalyptic number.

It is an amenable number.

1565561152 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1565561152 is a wasteful number, since it uses less digits than its factorization.

1565561152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 877 counting only the distinct ones).

The product of its digits is 45000, while the sum is 37.

The square root of 1565561152 is about 39567.1726561300. The cubic root of 1565561152 is about 1161.1545065448.

The spelling of 1565561152 in words is "one billion, five hundred sixty-five million, five hundred sixty-one thousand, one hundred fifty-two".