452985981 has 32 divisors (see below), whose sum is σ = 714620928. Its totient is φ = 249765120.

The previous prime is 452985971. The next prime is 452986019. The reversal of 452985981 is 189589254.

It is not a de Polignac number, because 452985981 - 2⁷ = 452985853 is a prime.

It is a super-2 number, since 2×452985981² = 410392597965064722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452985941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281080 + ... + 282686.

It is an arithmetic number, because the mean of its divisors is an integer number (22331904).

Almost surely, 2^452985981 is an apocalyptic number.

It is an amenable number.

452985981 is a deficient number, since it is larger than the sum of its proper divisors (261634947).

452985981 is a wasteful number, since it uses less digits than its factorization.

452985981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081.

The product of its digits is 1036800, while the sum is 51.

The square root of 452985981 is about 21283.4673162058. The cubic root of 452985981 is about 768.0006493457. Note that the first 3 decimals are identical.

The spelling of 452985981 in words is "four hundred fifty-two million, nine hundred eighty-five thousand, nine hundred eighty-one".