2502661 has 16 divisors (see below), whose sum is σ = 3112960. Its totient is φ = 1963440.

The previous prime is 2502649. The next prime is 2502667. The reversal of 2502661 is 1662052.

It is a cyclic number.

It is not a de Polignac number, because 2502661 - 2⁵ = 2502629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2502667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3820 + ... + 4426.

It is an arithmetic number, because the mean of its divisors is an integer number (194560).

2^2502661 is an apocalyptic number.

It is an amenable number.

2502661 is a deficient number, since it is larger than the sum of its proper divisors (610299).

2502661 is a wasteful number, since it uses less digits than its factorization.

2502661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2502661 is about 1581.9800883703. The cubic root of 2502661 is about 135.7690175234.

The spelling of 2502661 in words is "two million, five hundred two thousand, six hundred sixty-one".