2503523381 has 2 divisors, whose sum is σ = 2503523382. Its totient is φ = 2503523380.

The previous prime is 2503523303. The next prime is 2503523383. The reversal of 2503523381 is 1833253052.

2503523381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1268000881 + 1235522500 = 35609^2 + 35150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2503523381 is a prime.

It is a super-2 number, since 2×2503523381² = 12535258638427342322, which contains 22 as substring.

Together with 2503523383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2503523383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251761690 + 1251761691.

It is an arithmetic number, because the mean of its divisors is an integer number (1251761691).

Almost surely, 2^2503523381 is an apocalyptic number.

It is an amenable number.

2503523381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2503523381 is an equidigital number, since it uses as much as digits as its factorization.

2503523381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 2503523381 is about 50035.2214045266. The cubic root of 2503523381 is about 1357.8461041634.

The spelling of 2503523381 in words is "two billion, five hundred three million, five hundred twenty-three thousand, three hundred eighty-one".