1045023451 has 4 divisors (see below), whose sum is σ = 1045727712. Its totient is φ = 1044319192.

The previous prime is 1045023431. The next prime is 1045023479. The reversal of 1045023451 is 1543205401.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1045023451 - 2¹¹ = 1045021403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045023431) 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, 349900 + ... + 352873.

It is an arithmetic number, because the mean of its divisors is an integer number (261431928).

Almost surely, 2^1045023451 is an apocalyptic number.

1045023451 is a deficient number, since it is larger than the sum of its proper divisors (704261).

1045023451 is an equidigital number, since it uses as much as digits as its factorization.

1045023451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704260.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1045023451 is about 32326.8224698933. The cubic root of 1045023451 is about 1014.7880525202.

Adding to 1045023451 its reverse (1543205401), we get a palindrome (2588228852).

The spelling of 1045023451 in words is "one billion, forty-five million, twenty-three thousand, four hundred fifty-one".