320532451 has 4 divisors (see below), whose sum is σ = 337402600. Its totient is φ = 303662304.

The previous prime is 320532431. The next prime is 320532463. The reversal of 320532451 is 154235023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320532451 - 2⁷ = 320532323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320532431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8435046 + ... + 8435083.

It is an arithmetic number, because the mean of its divisors is an integer number (84350650).

Almost surely, 2^320532451 is an apocalyptic number.

320532451 is a deficient number, since it is larger than the sum of its proper divisors (16870149).

320532451 is a wasteful number, since it uses less digits than its factorization.

320532451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16870148.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 320532451 is about 17903.4200922617. The cubic root of 320532451 is about 684.3695344559.

Adding to 320532451 its reverse (154235023), we get a palindrome (474767474).

The spelling of 320532451 in words is "three hundred twenty million, five hundred thirty-two thousand, four hundred fifty-one".