549430451 has 2 divisors, whose sum is σ = 549430452. Its totient is φ = 549430450.

The previous prime is 549430411. The next prime is 549430487. The reversal of 549430451 is 154034945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 549430451 - 2¹⁰ = 549429427 is a prime.

It is not a weakly prime, because it can be changed into another prime (549430411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274715225 + 274715226.

It is an arithmetic number, because the mean of its divisors is an integer number (274715226).

Almost surely, 2^549430451 is an apocalyptic number.

549430451 is a deficient number, since it is larger than the sum of its proper divisors (1).

549430451 is an equidigital number, since it uses as much as digits as its factorization.

549430451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 549430451 is about 23439.9328284020. The cubic root of 549430451 is about 819.0383586130.

The spelling of 549430451 in words is "five hundred forty-nine million, four hundred thirty thousand, four hundred fifty-one".