549552901 has 4 divisors (see below), whose sum is σ = 550085932. Its totient is φ = 549019872.

The previous prime is 549552893. The next prime is 549552907. The reversal of 549552901 is 109255945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 109255945 = 5 ⋅21851189.

It can be written as a sum of positive squares in 2 ways, for example, as 501804801 + 47748100 = 22401^2 + 6910^2 .

It is a cyclic number.

It is not a de Polignac number, because 549552901 - 2³ = 549552893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549552907) 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, 264966 + ... + 267031.

It is an arithmetic number, because the mean of its divisors is an integer number (137521483).

Almost surely, 2^549552901 is an apocalyptic number.

It is an amenable number.

549552901 is a deficient number, since it is larger than the sum of its proper divisors (533031).

549552901 is a wasteful number, since it uses less digits than its factorization.

549552901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533030.

The product of its (nonzero) digits is 81000, while the sum is 40.

The square root of 549552901 is about 23442.5446784260. The cubic root of 549552901 is about 819.0991996756.

The spelling of 549552901 in words is "five hundred forty-nine million, five hundred fifty-two thousand, nine hundred one".