2251502661 has 16 divisors (see below), whose sum is σ = 3252515904. Its totient is φ = 1379852544.

The previous prime is 2251502629. The next prime is 2251502707. The reversal of 2251502661 is 1662051522.

It is not a de Polignac number, because 2251502661 - 2⁵ = 2251502629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251500661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511146 + ... + 515531.

It is an arithmetic number, because the mean of its divisors is an integer number (203282244).

Almost surely, 2^2251502661 is an apocalyptic number.

It is an amenable number.

2251502661 is a deficient number, since it is larger than the sum of its proper divisors (1001013243).

2251502661 is a wasteful number, since it uses less digits than its factorization.

2251502661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026740.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 2251502661 is about 47450.0016965226. The cubic root of 2251502661 is about 1310.6623422546.

The spelling of 2251502661 in words is "two billion, two hundred fifty-one million, five hundred two thousand, six hundred sixty-one".