2503432661 has 2 divisors, whose sum is σ = 2503432662. Its totient is φ = 2503432660.

The previous prime is 2503432583. The next prime is 2503432693. The reversal of 2503432661 is 1662343052.

It is an a-pointer prime, because the next prime (2503432693) can be obtained adding 2503432661 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1257766225 + 1245666436 = 35465^2 + 35294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2503432661 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2503432361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251716330 + 1251716331.

It is an arithmetic number, because the mean of its divisors is an integer number (1251716331).

Almost surely, 2^2503432661 is an apocalyptic number.

It is an amenable number.

2503432661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2503432661 is an equidigital number, since it uses as much as digits as its factorization.

2503432661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 2503432661 is about 50034.3148349210. The cubic root of 2503432661 is about 1357.8297025742.

The spelling of 2503432661 in words is "two billion, five hundred three million, four hundred thirty-two thousand, six hundred sixty-one".