452905981 has 8 divisors (see below), whose sum is σ = 494280000. Its totient is φ = 411565440.

The previous prime is 452905919. The next prime is 452905991. The reversal of 452905981 is 189509254.

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

It is not a de Polignac number, because 452905981 - 2¹³ = 452897789 is a prime.

It is a super-2 number, since 2×452905981² = 410247655251144722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452905991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26125 + ... + 39853.

It is an arithmetic number, because the mean of its divisors is an integer number (61785000).

Almost surely, 2^452905981 is an apocalyptic number.

It is an amenable number.

452905981 is a deficient number, since it is larger than the sum of its proper divisors (41374019).

452905981 is a wasteful number, since it uses less digits than its factorization.

452905981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16739.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 452905981 is about 21281.5878401965. The cubic root of 452905981 is about 767.9554355335.

The spelling of 452905981 in words is "four hundred fifty-two million, nine hundred five thousand, nine hundred eighty-one".