320055451 has 2 divisors, whose sum is σ = 320055452. Its totient is φ = 320055450.

The previous prime is 320055443. The next prime is 320055457. The reversal of 320055451 is 154550023.

It is a strong prime.

It is an emirp because it is prime and its reverse (154550023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320055451 - 2³ = 320055443 is a prime.

It is not a weakly prime, because it can be changed into another prime (320055457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160027725 + 160027726.

It is an arithmetic number, because the mean of its divisors is an integer number (160027726).

Almost surely, 2^320055451 is an apocalyptic number.

320055451 is a deficient number, since it is larger than the sum of its proper divisors (1).

320055451 is an equidigital number, since it uses as much as digits as its factorization.

320055451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 320055451 is about 17890.0936554284. The cubic root of 320055451 is about 684.0298846706.

The spelling of 320055451 in words is "three hundred twenty million, fifty-five thousand, four hundred fifty-one".