2261506885 has 24 divisors (see below), whose sum is σ = 3059170848. Its totient is φ = 1591639200.

The previous prime is 2261506879. The next prime is 2261506967. The reversal of 2261506885 is 5886051622.

It is not a de Polignac number, because 2261506885 - 2²⁵ = 2227952453 is a prime.

It is a super-2 number, since 2×2261506885² = 10228826781804806450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31462 + ... + 74248.

It is an arithmetic number, because the mean of its divisors is an integer number (127465452).

Almost surely, 2^2261506885 is an apocalyptic number.

It is an amenable number.

2261506885 is a deficient number, since it is larger than the sum of its proper divisors (797663963).

2261506885 is a wasteful number, since it uses less digits than its factorization.

2261506885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42865 (or 42834 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 2261506885 is about 47555.3034371562. The cubic root of 2261506885 is about 1312.6007198293.

The spelling of 2261506885 in words is "two billion, two hundred sixty-one million, five hundred six thousand, eight hundred eighty-five".