451661356 has 12 divisors (see below), whose sum is σ = 790881840. Its totient is φ = 225695120.

The previous prime is 451661333. The next prime is 451661359. The reversal of 451661356 is 653166154.

It is not an unprimeable number, because it can be changed into a prime (451661359) 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, 26200 + ... + 39871.

It is an arithmetic number, because the mean of its divisors is an integer number (65906820).

Almost surely, 2^451661356 is an apocalyptic number.

It is an amenable number.

451661356 is a deficient number, since it is larger than the sum of its proper divisors (339220484).

451661356 is a wasteful number, since it uses less digits than its factorization.

451661356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67784 (or 67782 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 451661356 is about 21252.3258962402. The cubic root of 451661356 is about 767.2513207217.

The spelling of 451661356 in words is "four hundred fifty-one million, six hundred sixty-one thousand, three hundred fifty-six".