2261563531 has 8 divisors (see below), whose sum is σ = 2326547520. Its totient is φ = 2197282368.

The previous prime is 2261563511. The next prime is 2261563537. The reversal of 2261563531 is 1353651622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2261563531 - 2⁹ = 2261563019 is a prime.

It is a super-2 number, since 2×2261563531² = 10229339209498375922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2261563537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169176 + ... + 182053.

It is an arithmetic number, because the mean of its divisors is an integer number (290818440).

Almost surely, 2^2261563531 is an apocalyptic number.

2261563531 is a deficient number, since it is larger than the sum of its proper divisors (64983989).

2261563531 is a wasteful number, since it uses less digits than its factorization.

2261563531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351413.

The product of its digits is 32400, while the sum is 34.

The square root of 2261563531 is about 47555.8990136870. The cubic root of 2261563531 is about 1312.6116790353.

The spelling of 2261563531 in words is "two billion, two hundred sixty-one million, five hundred sixty-three thousand, five hundred thirty-one".