1452451921 has 4 divisors (see below), whose sum is σ = 1502536500. Its totient is φ = 1402367344.

The previous prime is 1452451879. The next prime is 1452451927. The reversal of 1452451921 is 1291542541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 763914321 + 688537600 = 27639^2 + 26240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1452451921 - 2²⁵ = 1418897489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1452451927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25042246 + ... + 25042303.

It is an arithmetic number, because the mean of its divisors is an integer number (375634125).

Almost surely, 2^1452451921 is an apocalyptic number.

It is an amenable number.

1452451921 is a deficient number, since it is larger than the sum of its proper divisors (50084579).

1452451921 is an equidigital number, since it uses as much as digits as its factorization.

1452451921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50084578.

The product of its digits is 14400, while the sum is 34.

The square root of 1452451921 is about 38111.0472304291. The cubic root of 1452451921 is about 1132.4888159421.

The spelling of 1452451921 in words is "one billion, four hundred fifty-two million, four hundred fifty-one thousand, nine hundred twenty-one".