2261506564 has 6 divisors (see below), whose sum is σ = 3957636494. Its totient is φ = 1130753280.

The previous prime is 2261506547. The next prime is 2261506573. The reversal of 2261506564 is 4656051622.

It can be written as a sum of positive squares in only one way, i.e., 2024100100 + 237406464 = 44990^2 + 15408^2 .

It is a super-2 number, since 2×2261506564² = 10228823878030172192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282688317 + ... + 282688324.

Almost surely, 2^2261506564 is an apocalyptic number.

It is an amenable number.

2261506564 is a deficient number, since it is larger than the sum of its proper divisors (1696129930).

2261506564 is a wasteful number, since it uses less digits than its factorization.

2261506564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565376645 (or 565376643 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 2261506564 is about 47555.3000621382. The cubic root of 2261506564 is about 1312.6006577254.

The spelling of 2261506564 in words is "two billion, two hundred sixty-one million, five hundred six thousand, five hundred sixty-four".