263223451 has 2 divisors, whose sum is σ = 263223452. Its totient is φ = 263223450.

The previous prime is 263223407. The next prime is 263223481. The reversal of 263223451 is 154322362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263223451 - 2²⁵ = 229669019 is a prime.

It is not a weakly prime, because it can be changed into another prime (263223481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131611725 + 131611726.

It is an arithmetic number, because the mean of its divisors is an integer number (131611726).

Almost surely, 2^263223451 is an apocalyptic number.

263223451 is a deficient number, since it is larger than the sum of its proper divisors (1).

263223451 is an equidigital number, since it uses as much as digits as its factorization.

263223451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 28.

The square root of 263223451 is about 16224.1625669863. The cubic root of 263223451 is about 640.8772564562.

The spelling of 263223451 in words is "two hundred sixty-three million, two hundred twenty-three thousand, four hundred fifty-one".