1087565473 has 2 divisors, whose sum is σ = 1087565474. Its totient is φ = 1087565472.

The previous prime is 1087565407. The next prime is 1087565513. The reversal of 1087565473 is 3745657801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1087482529 + 82944 = 32977^2 + 288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087565473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1087565173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543782736 + 543782737.

It is an arithmetic number, because the mean of its divisors is an integer number (543782737).

Almost surely, 2^1087565473 is an apocalyptic number.

It is an amenable number.

1087565473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087565473 is an equidigital number, since it uses as much as digits as its factorization.

1087565473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 46.

The square root of 1087565473 is about 32978.2575798055. The cubic root of 1087565473 is about 1028.3756950806.

The spelling of 1087565473 in words is "one billion, eighty-seven million, five hundred sixty-five thousand, four hundred seventy-three".