2205451 has 2 divisors, whose sum is σ = 2205452. Its totient is φ = 2205450.

The previous prime is 2205449. The next prime is 2205481. The reversal of 2205451 is 1545022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2205451 - 2¹ = 2205449 is a prime.

It is a super-2 number, since 2×2205451² = 9728028226802, which contains 22 as substring.

Together with 2205449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2205481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102725 + 1102726.

It is an arithmetic number, because the mean of its divisors is an integer number (1102726).

2^2205451 is an apocalyptic number.

2205451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205451 is an equidigital number, since it uses as much as digits as its factorization.

2205451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 2205451 is about 1485.0760923266. The cubic root of 2205451 is about 130.1664731203.

It can be divided in two parts, 220 and 5451, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 2205451 in words is "two million, two hundred five thousand, four hundred fifty-one".