1254427591 has 2 divisors, whose sum is σ = 1254427592. Its totient is φ = 1254427590.

The previous prime is 1254427553. The next prime is 1254427621. The reversal of 1254427591 is 1957244521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1254427591 - 2¹⁹ = 1253903303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254427511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627213795 + 627213796.

It is an arithmetic number, because the mean of its divisors is an integer number (627213796).

Almost surely, 2^1254427591 is an apocalyptic number.

1254427591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254427591 is an equidigital number, since it uses as much as digits as its factorization.

1254427591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 40.

The square root of 1254427591 is about 35417.8993024713. The cubic root of 1254427591 is about 1078.4877070420.

The spelling of 1254427591 in words is "one billion, two hundred fifty-four million, four hundred twenty-seven thousand, five hundred ninety-one".