20220451 has 2 divisors, whose sum is σ = 20220452. Its totient is φ = 20220450.

The previous prime is 20220407. The next prime is 20220467. The reversal of 20220451 is 15402202.

It is an a-pointer prime, because the next prime (20220467) can be obtained adding 20220451 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20220451 - 2⁷ = 20220323 is a prime.

It is not a weakly prime, because it can be changed into another prime (20220251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110225 + 10110226.

It is an arithmetic number, because the mean of its divisors is an integer number (10110226).

Almost surely, 2^20220451 is an apocalyptic number.

20220451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220451 is an equidigital number, since it uses as much as digits as its factorization.

20220451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20220451 is about 4496.7155791755. The cubic root of 20220451 is about 272.4354463703.

Adding to 20220451 its reverse (15402202), we get a palindrome (35622653).

The spelling of 20220451 in words is "twenty million, two hundred twenty thousand, four hundred fifty-one".