451521653 has 8 divisors (see below), whose sum is σ = 498104640. Its totient is φ = 405861280.

The previous prime is 451521617. The next prime is 451521661. The reversal of 451521653 is 356125154.

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

It is not a de Polignac number, because 451521653 - 2¹⁴ = 451505269 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451521053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229625 + ... + 231582.

It is an arithmetic number, because the mean of its divisors is an integer number (62263080).

Almost surely, 2^451521653 is an apocalyptic number.

It is an amenable number.

451521653 is a deficient number, since it is larger than the sum of its proper divisors (46582987).

451521653 is a wasteful number, since it uses less digits than its factorization.

451521653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461307.

The product of its digits is 18000, while the sum is 32.

The square root of 451521653 is about 21249.0388723820. The cubic root of 451521653 is about 767.1722066073.

The spelling of 451521653 in words is "four hundred fifty-one million, five hundred twenty-one thousand, six hundred fifty-three".