2503961 has 2 divisors, whose sum is σ = 2503962. Its totient is φ = 2503960.

The previous prime is 2503931. The next prime is 2503979. The reversal of 2503961 is 1693052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2343961 + 160000 = 1531^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 2503961 - 2¹⁰ = 2502937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2503961.

It is not a weakly prime, because it can be changed into another prime (2503931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251980 + 1251981.

It is an arithmetic number, because the mean of its divisors is an integer number (1251981).

2^2503961 is an apocalyptic number.

It is an amenable number.

2503961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2503961 is an equidigital number, since it uses as much as digits as its factorization.

2503961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 2503961 is about 1582.3909125118. The cubic root of 2503961 is about 135.7925217283.

The spelling of 2503961 in words is "two million, five hundred three thousand, nine hundred sixty-one".