2503631261 has 16 divisors (see below), whose sum is σ = 2557666368. Its totient is φ = 2450380800.

The previous prime is 2503631237. The next prime is 2503631267. The reversal of 2503631261 is 1621363052.

2503631261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2503631261 - 2¹⁴ = 2503614877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2503631267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3905501 + ... + 3906141.

It is an arithmetic number, because the mean of its divisors is an integer number (159854148).

Almost surely, 2^2503631261 is an apocalyptic number.

It is an amenable number.

2503631261 is a deficient number, since it is larger than the sum of its proper divisors (54035107).

2503631261 is a wasteful number, since it uses less digits than its factorization.

2503631261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2503631261 is about 50036.2994335113. The cubic root of 2503631261 is about 1357.8656076540.

Subtracting from 2503631261 its reverse (1621363052), we obtain a square (882268209 = 29703²).

The spelling of 2503631261 in words is "two billion, five hundred three million, six hundred thirty-one thousand, two hundred sixty-one".