2251451 has 2 divisors, whose sum is σ = 2251452. Its totient is φ = 2251450.

The previous prime is 2251427. The next prime is 2251471. The reversal of 2251451 is 1541522.

It is an a-pointer prime, because the next prime (2251471) can be obtained adding 2251451 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2251451 - 2¹⁴ = 2235067 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (2251411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125725 + 1125726.

It is an arithmetic number, because the mean of its divisors is an integer number (1125726).

2^2251451 is an apocalyptic number.

2251451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251451 is an equidigital number, since it uses as much as digits as its factorization.

2251451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 400, while the sum is 20.

The square root of 2251451 is about 1500.4835887140. The cubic root of 2251451 is about 131.0652317743.

Adding to 2251451 its reverse (1541522), we get a palindrome (3792973).

The spelling of 2251451 in words is "two million, two hundred fifty-one thousand, four hundred fifty-one".