453451421 has 4 divisors (see below), whose sum is σ = 480125052. Its totient is φ = 426777792.

The previous prime is 453451367. The next prime is 453451447. The reversal of 453451421 is 124154354.

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 178356025 + 275095396 = 13355^2 + 16586^2 .

It is not a de Polignac number, because 453451421 - 2¹⁰ = 453450397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453451451) 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, 13336790 + ... + 13336823.

It is an arithmetic number, because the mean of its divisors is an integer number (120031263).

Almost surely, 2^453451421 is an apocalyptic number.

It is an amenable number.

453451421 is a deficient number, since it is larger than the sum of its proper divisors (26673631).

453451421 is a wasteful number, since it uses less digits than its factorization.

453451421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26673630.

The product of its digits is 9600, while the sum is 29.

The square root of 453451421 is about 21294.3988175295. The cubic root of 453451421 is about 768.2635977800.

It can be divided in two parts, 4534 and 51421, that added together give a palindrome (55955).

The spelling of 453451421 in words is "four hundred fifty-three million, four hundred fifty-one thousand, four hundred twenty-one".