549420571 has 4 divisors (see below), whose sum is σ = 627909232. Its totient is φ = 470931912.

The previous prime is 549420559. The next prime is 549420581. The reversal of 549420571 is 175024945.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549420571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 549420571.

It is not an unprimeable number, because it can be changed into a prime (549420551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39244320 + ... + 39244333.

It is an arithmetic number, because the mean of its divisors is an integer number (156977308).

Almost surely, 2^549420571 is an apocalyptic number.

549420571 is a deficient number, since it is larger than the sum of its proper divisors (78488661).

549420571 is an equidigital number, since it uses as much as digits as its factorization.

549420571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78488660.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 549420571 is about 23439.7220759974. The cubic root of 549420571 is about 819.0334491972.

The spelling of 549420571 in words is "five hundred forty-nine million, four hundred twenty thousand, five hundred seventy-one".