451121346 has 32 divisors (see below), whose sum is σ = 1079608320. Its totient is φ = 138806352.

The previous prime is 451121329. The next prime is 451121347. The reversal of 451121346 is 643121154.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (451121347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320610 + ... + 322013.

It is an arithmetic number, because the mean of its divisors is an integer number (33737760).

Almost surely, 2^451121346 is an apocalyptic number.

451121346 is an abundant number, since it is smaller than the sum of its proper divisors (628486974).

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

451121346 is a wasteful number, since it uses less digits than its factorization.

451121346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642647 (or 642641 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 451121346 is about 21239.6173694349. The cubic root of 451121346 is about 766.9454214657.

The spelling of 451121346 in words is "four hundred fifty-one million, one hundred twenty-one thousand, three hundred forty-six".