549903971 has 2 divisors, whose sum is σ = 549903972. Its totient is φ = 549903970.

The previous prime is 549903943. The next prime is 549903973. The reversal of 549903971 is 179309945.

549903971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 549903971 - 2¹⁴ = 549887587 is a prime.

Together with 549903973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (549903973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274951985 + 274951986.

It is an arithmetic number, because the mean of its divisors is an integer number (274951986).

Almost surely, 2^549903971 is an apocalyptic number.

549903971 is a deficient number, since it is larger than the sum of its proper divisors (1).

549903971 is an equidigital number, since it uses as much as digits as its factorization.

549903971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 549903971 is about 23450.0313645846. The cubic root of 549903971 is about 819.2735838238.

The spelling of 549903971 in words is "five hundred forty-nine million, nine hundred three thousand, nine hundred seventy-one".