2251241564 has 72 divisors (see below), whose sum is σ = 4856568192. Its totient is φ = 903439680.

The previous prime is 2251241557. The next prime is 2251241569. The reversal of 2251241564 is 4651421522.

It is a self number, because there is not a number n which added to its sum of digits gives 2251241564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251241569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164447 + ... + 177609.

It is an arithmetic number, because the mean of its divisors is an integer number (67452336).

Almost surely, 2^2251241564 is an apocalyptic number.

It is an amenable number.

2251241564 is an abundant number, since it is smaller than the sum of its proper divisors (2605326628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2251241564 is a wasteful number, since it uses less digits than its factorization.

2251241564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13227 (or 13212 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 2251241564 is about 47447.2503312890. The cubic root of 2251241564 is about 1310.6116763533.

The spelling of 2251241564 in words is "two billion, two hundred fifty-one million, two hundred forty-one thousand, five hundred sixty-four".