451225340 has 12 divisors (see below), whose sum is σ = 947573256. Its totient is φ = 180490128.

The previous prime is 451225321. The next prime is 451225343. The reversal of 451225340 is 43522154.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451225343) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11280614 + ... + 11280653.

It is an arithmetic number, because the mean of its divisors is an integer number (78964438).

Almost surely, 2^451225340 is an apocalyptic number.

It is an amenable number.

451225340 is an abundant number, since it is smaller than the sum of its proper divisors (496347916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451225340 is a wasteful number, since it uses less digits than its factorization.

451225340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22561276 (or 22561274 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 451225340 is about 21242.0653421460. The cubic root of 451225340 is about 767.0043498782.

Adding to 451225340 its reverse (43522154), we get a palindrome (494747494).

The spelling of 451225340 in words is "four hundred fifty-one million, two hundred twenty-five thousand, three hundred forty".