452623981 has 2 divisors, whose sum is σ = 452623982. Its totient is φ = 452623980.

The previous prime is 452623961. The next prime is 452624041. The reversal of 452623981 is 189326254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446645956 + 5978025 = 21134^2 + 2445^2 .

It is a cyclic number.

It is not a de Polignac number, because 452623981 - 2⁵ = 452623949 is a prime.

It is a super-2 number, since 2×452623981² = 409736936352576722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (452623961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226311990 + 226311991.

It is an arithmetic number, because the mean of its divisors is an integer number (226311991).

Almost surely, 2^452623981 is an apocalyptic number.

It is an amenable number.

452623981 is a deficient number, since it is larger than the sum of its proper divisors (1).

452623981 is an equidigital number, since it uses as much as digits as its factorization.

452623981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 452623981 is about 21274.9613630671. The cubic root of 452623981 is about 767.7960143697.

The spelling of 452623981 in words is "four hundred fifty-two million, six hundred twenty-three thousand, nine hundred eighty-one".