2502772661 has 4 divisors (see below), whose sum is σ = 2537057292. Its totient is φ = 2468488032.

The previous prime is 2502772651. The next prime is 2502772667. The reversal of 2502772661 is 1662772052.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2040780625 + 461992036 = 45175^2 + 21494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2502772661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2502772667) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17142206 + ... + 17142351.

It is an arithmetic number, because the mean of its divisors is an integer number (634264323).

Almost surely, 2^2502772661 is an apocalyptic number.

It is an amenable number.

2502772661 is a deficient number, since it is larger than the sum of its proper divisors (34284631).

2502772661 is an equidigital number, since it uses as much as digits as its factorization.

2502772661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34284630.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 2502772661 is about 50027.7189266111. The cubic root of 2502772661 is about 1357.7103669137.

The spelling of 2502772661 in words is "two billion, five hundred two million, seven hundred seventy-two thousand, six hundred sixty-one".