451955890 has 8 divisors (see below), whose sum is σ = 813520620. Its totient is φ = 180782352.

The previous prime is 451955839. The next prime is 451955891. The reversal of 451955890 is 98559154.

It can be written as a sum of positive squares in 2 ways, for example, as 448719489 + 3236401 = 21183^2 + 1799^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 451955890.

It is not an unprimeable number, because it can be changed into a prime (451955891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22597785 + ... + 22597804.

Almost surely, 2^451955890 is an apocalyptic number.

451955890 is a deficient number, since it is larger than the sum of its proper divisors (361564730).

451955890 is a wasteful number, since it uses less digits than its factorization.

451955890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45195596.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 451955890 is about 21259.2542202214. The cubic root of 451955890 is about 767.4180625320.

The spelling of 451955890 in words is "four hundred fifty-one million, nine hundred fifty-five thousand, eight hundred ninety".