451132993 has 2 divisors, whose sum is σ = 451132994. Its totient is φ = 451132992.

The previous prime is 451132991. The next prime is 451133009. The reversal of 451132993 is 399231154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 367373889 + 83759104 = 19167^2 + 9152^2 .

It is a cyclic number.

It is not a de Polignac number, because 451132993 - 2¹ = 451132991 is a prime.

Together with 451132991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (451132991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225566496 + 225566497.

It is an arithmetic number, because the mean of its divisors is an integer number (225566497).

Almost surely, 2^451132993 is an apocalyptic number.

It is an amenable number.

451132993 is a deficient number, since it is larger than the sum of its proper divisors (1).

451132993 is an equidigital number, since it uses as much as digits as its factorization.

451132993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 37.

The square root of 451132993 is about 21239.8915486873. The cubic root of 451132993 is about 766.9520217123.

The spelling of 451132993 in words is "four hundred fifty-one million, one hundred thirty-two thousand, nine hundred ninety-three".