452721505 has 8 divisors (see below), whose sum is σ = 548074152. Its totient is φ = 358971648.

The previous prime is 452721499. The next prime is 452721517. The reversal of 452721505 is 505127254.

It can be written as a sum of positive squares in 4 ways, for example, as 37540129 + 415181376 = 6127^2 + 20376^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 452721505 - 2³ = 452721497 is a prime.

It is a super-2 number, since 2×452721505² = 409913522178930050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400074 + ... + 401203.

It is an arithmetic number, because the mean of its divisors is an integer number (68509269).

Almost surely, 2^452721505 is an apocalyptic number.

It is an amenable number.

452721505 is a deficient number, since it is larger than the sum of its proper divisors (95352647).

452721505 is a wasteful number, since it uses less digits than its factorization.

452721505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801395.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 452721505 is about 21277.2532296817. The cubic root of 452721505 is about 767.8511544450.

Adding to 452721505 its reverse (505127254), we get a palindrome (957848759).

The spelling of 452721505 in words is "four hundred fifty-two million, seven hundred twenty-one thousand, five hundred five".