2547936121 has 2 divisors, whose sum is σ = 2547936122. Its totient is φ = 2547936120.

The previous prime is 2547936089. The next prime is 2547936133. The reversal of 2547936121 is 1216397452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1895644521 + 652291600 = 43539^2 + 25540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2547936121 - 2⁵ = 2547936089 is a prime.

It is not a weakly prime, because it can be changed into another prime (2547936161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1273968060 + 1273968061.

It is an arithmetic number, because the mean of its divisors is an integer number (1273968061).

Almost surely, 2^2547936121 is an apocalyptic number.

It is an amenable number.

2547936121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2547936121 is an equidigital number, since it uses as much as digits as its factorization.

2547936121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 2547936121 is about 50477.0851079973. The cubic root of 2547936121 is about 1365.8285248077.

The spelling of 2547936121 in words is "two billion, five hundred forty-seven million, nine hundred thirty-six thousand, one hundred twenty-one".