1045505451 has 4 divisors (see below), whose sum is σ = 1394007272. Its totient is φ = 697003632.

The previous prime is 1045505441. The next prime is 1045505467. The reversal of 1045505451 is 1545055401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1545055401 = 3 ⋅515018467.

It is not a de Polignac number, because 1045505451 - 2⁶ = 1045505387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045505441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174250906 + ... + 174250911.

It is an arithmetic number, because the mean of its divisors is an integer number (348501818).

Almost surely, 2^1045505451 is an apocalyptic number.

1045505451 is a deficient number, since it is larger than the sum of its proper divisors (348501821).

1045505451 is an equidigital number, since it uses as much as digits as its factorization.

1045505451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348501820.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 1045505451 is about 32334.2767199144. The cubic root of 1045505451 is about 1014.9440466781.

The spelling of 1045505451 in words is "one billion, forty-five million, five hundred five thousand, four hundred fifty-one".