451313513 has 4 divisors (see below), whose sum is σ = 515786880. Its totient is φ = 386840148.

The previous prime is 451313507. The next prime is 451313537. The reversal of 451313513 is 315313154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 451313513 - 2¹⁴ = 451297129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (451313543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32236673 + ... + 32236686.

It is an arithmetic number, because the mean of its divisors is an integer number (128946720).

Almost surely, 2^451313513 is an apocalyptic number.

It is an amenable number.

451313513 is a deficient number, since it is larger than the sum of its proper divisors (64473367).

451313513 is an equidigital number, since it uses as much as digits as its factorization.

451313513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64473366.

The product of its digits is 2700, while the sum is 26.

The square root of 451313513 is about 21244.1406745484. The cubic root of 451313513 is about 767.0543061963.

Adding to 451313513 its reverse (315313154), we get a palindrome (766626667).

The spelling of 451313513 in words is "four hundred fifty-one million, three hundred thirteen thousand, five hundred thirteen".