2503662261 has 4 divisors (see below), whose sum is σ = 3338216352. Its totient is φ = 1669108172.

The previous prime is 2503662241. The next prime is 2503662277. The reversal of 2503662261 is 1622663052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2503662261 - 2⁶ = 2503662197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2503662211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417277041 + ... + 417277046.

It is an arithmetic number, because the mean of its divisors is an integer number (834554088).

Almost surely, 2^2503662261 is an apocalyptic number.

It is an amenable number.

2503662261 is a deficient number, since it is larger than the sum of its proper divisors (834554091).

2503662261 is an equidigital number, since it uses as much as digits as its factorization.

2503662261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834554090.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 2503662261 is about 50036.6092076591. The cubic root of 2503662261 is about 1357.8712120016.

The spelling of 2503662261 in words is "two billion, five hundred three million, six hundred sixty-two thousand, two hundred sixty-one".