451213652 has 12 divisors (see below), whose sum is σ = 790351380. Its totient is φ = 225398976.

The previous prime is 451213627. The next prime is 451213661. The reversal of 451213652 is 256312154.

It can be written as a sum of positive squares in 2 ways, for example, as 102495376 + 348718276 = 10124^2 + 18674^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47027 + ... + 55802.

It is an arithmetic number, because the mean of its divisors is an integer number (65862615).

Almost surely, 2^451213652 is an apocalyptic number.

It is an amenable number.

451213652 is a deficient number, since it is larger than the sum of its proper divisors (339137728).

451213652 is a wasteful number, since it uses less digits than its factorization.

451213652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103930 (or 103928 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 451213652 is about 21241.7902258731. The cubic root of 451213652 is about 766.9977273008.

The spelling of 451213652 in words is "four hundred fifty-one million, two hundred thirteen thousand, six hundred fifty-two".