2391451 has 2 divisors, whose sum is σ = 2391452. Its totient is φ = 2391450.

The previous prime is 2391449. The next prime is 2391461. The reversal of 2391451 is 1541932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2391451 - 2¹ = 2391449 is a prime.

Together with 2391449, it forms a pair of twin primes.

2391451 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2391401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195725 + 1195726.

It is an arithmetic number, because the mean of its divisors is an integer number (1195726).

2^2391451 is an apocalyptic number.

2391451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391451 is an equidigital number, since it uses as much as digits as its factorization.

2391451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 2391451 is about 1546.4316991060. The cubic root of 2391451 is about 133.7274291549.

The spelling of 2391451 in words is "two million, three hundred ninety-one thousand, four hundred fifty-one".