451940205 has 32 divisors (see below), whose sum is σ = 758626560. Its totient is φ = 229429760.

The previous prime is 451940201. The next prime is 451940221. The reversal of 451940205 is 502049154.

It is not a de Polignac number, because 451940205 - 2² = 451940201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451940201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23569 + ... + 38201.

It is an arithmetic number, because the mean of its divisors is an integer number (23707080).

Almost surely, 2^451940205 is an apocalyptic number.

It is an amenable number.

451940205 is a deficient number, since it is larger than the sum of its proper divisors (306686355).

451940205 is a wasteful number, since it uses less digits than its factorization.

451940205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14741.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 451940205 is about 21258.8853188496. The cubic root of 451940205 is about 767.4091847545.

Adding to 451940205 its reverse (502049154), we get a palindrome (953989359).

The spelling of 451940205 in words is "four hundred fifty-one million, nine hundred forty thousand, two hundred five".