2501547913 has 2 divisors, whose sum is σ = 2501547914. Its totient is φ = 2501547912.

The previous prime is 2501547889. The next prime is 2501547931. The reversal of 2501547913 is 3197451052.

Together with next prime (2501547931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2118484729 + 383063184 = 46027^2 + 19572^2 .

It is a cyclic number.

It is not a de Polignac number, because 2501547913 - 2⁹ = 2501547401 is a prime.

It is a super-2 number, since 2×2501547913² = 12515483922069311138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2501547953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250773956 + 1250773957.

It is an arithmetic number, because the mean of its divisors is an integer number (1250773957).

Almost surely, 2^2501547913 is an apocalyptic number.

It is an amenable number.

2501547913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2501547913 is an equidigital number, since it uses as much as digits as its factorization.

2501547913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 2501547913 is about 50015.4767347068. The cubic root of 2501547913 is about 1357.4888626598.

Adding to 2501547913 its reverse (3197451052), we get a palindrome (5698998965).

The spelling of 2501547913 in words is "two billion, five hundred one million, five hundred forty-seven thousand, nine hundred thirteen".