451140722 has 18 divisors (see below), whose sum is σ = 708497517. Its totient is φ = 215432536.

The previous prime is 451140709. The next prime is 451140749. The reversal of 451140722 is 227041154.

It can be written as a sum of positive squares in 2 ways, for example, as 416200801 + 34939921 = 20401^2 + 5911^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=15019.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451140691 and 451140700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 690548 + ... + 691200.

Almost surely, 2^451140722 is an apocalyptic number.

451140722 is a deficient number, since it is larger than the sum of its proper divisors (257356795).

451140722 is an frugal number, since it uses more digits than its factorization.

451140722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 451140722 is about 21240.0734932815. The cubic root of 451140722 is about 766.9564016021.

Adding to 451140722 its reverse (227041154), we get a palindrome (678181876).

The spelling of 451140722 in words is "four hundred fifty-one million, one hundred forty thousand, seven hundred twenty-two".