2561427371 has 2 divisors, whose sum is σ = 2561427372. Its totient is φ = 2561427370.

The previous prime is 2561427347. The next prime is 2561427391. The reversal of 2561427371 is 1737241652.

2561427371 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 is a cyclic number.

It is not a de Polignac number, because 2561427371 - 2¹⁴ = 2561410987 is a prime.

It is not a weakly prime, because it can be changed into another prime (2561427331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280713685 + 1280713686.

It is an arithmetic number, because the mean of its divisors is an integer number (1280713686).

Almost surely, 2^2561427371 is an apocalyptic number.

2561427371 is a deficient number, since it is larger than the sum of its proper divisors (1).

2561427371 is an equidigital number, since it uses as much as digits as its factorization.

2561427371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 2561427371 is about 50610.5460452661. The cubic root of 2561427371 is about 1368.2349569858.

The spelling of 2561427371 in words is "two billion, five hundred sixty-one million, four hundred twenty-seven thousand, three hundred seventy-one".