451314421 has 2 divisors, whose sum is σ = 451314422. Its totient is φ = 451314420.

The previous prime is 451314407. The next prime is 451314431. The reversal of 451314421 is 124413154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327103396 + 124211025 = 18086^2 + 11145^2 .

It is a cyclic number.

It is not a de Polignac number, because 451314421 - 2¹¹ = 451312373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451314401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225657210 + 225657211.

It is an arithmetic number, because the mean of its divisors is an integer number (225657211).

Almost surely, 2^451314421 is an apocalyptic number.

It is an amenable number.

451314421 is a deficient number, since it is larger than the sum of its proper divisors (1).

451314421 is an equidigital number, since it uses as much as digits as its factorization.

451314421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 451314421 is about 21244.1620451361. The cubic root of 451314421 is about 767.0548206095.

Adding to 451314421 its reverse (124413154), we get a palindrome (575727575).

The spelling of 451314421 in words is "four hundred fifty-one million, three hundred fourteen thousand, four hundred twenty-one".