2591252244 has 72 divisors (see below), whose sum is σ = 7517077568. Its totient is φ = 737268480.

The previous prime is 2591252233. The next prime is 2591252297. The reversal of 2591252244 is 4422521952.

2591252244 is a `hidden beast` number, since 2 + 5 + 91 + 2 + 522 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2591252199 and 2591252208.

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, 39399 + ... + 82065.

Almost surely, 2^2591252244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2591252244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3758538784).

2591252244 is an abundant number, since it is smaller than the sum of its proper divisors (4925825324).

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

2591252244 is a wasteful number, since it uses less digits than its factorization.

2591252244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42925 (or 42920 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 2591252244 is about 50904.3440582432. The cubic root of 2591252244 is about 1373.5249846955.

The spelling of 2591252244 in words is "two billion, five hundred ninety-one million, two hundred fifty-two thousand, two hundred forty-four".