5091450391 has 2 divisors, whose sum is σ = 5091450392. Its totient is φ = 5091450390.

The previous prime is 5091450359. The next prime is 5091450431. The reversal of 5091450391 is 1930541905.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5091450391 - 2⁵ = 5091450359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5091450391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5091459391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2545725195 + 2545725196.

It is an arithmetic number, because the mean of its divisors is an integer number (2545725196).

Almost surely, 2^5091450391 is an apocalyptic number.

5091450391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5091450391 is an equidigital number, since it uses as much as digits as its factorization.

5091450391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 5091450391 is about 71354.3999414192. The cubic root of 5091450391 is about 1720.3382234409.

The spelling of 5091450391 in words is "five billion, ninety-one million, four hundred fifty thousand, three hundred ninety-one".