549978901 has 8 divisors (see below), whose sum is σ = 565022304. Its totient is φ = 535038000.

The previous prime is 549978853. The next prime is 549978907. The reversal of 549978901 is 109879945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 549978901 - 2¹⁷ = 549847829 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 (549978907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14686 + ... + 36271.

It is an arithmetic number, because the mean of its divisors is an integer number (70627788).

Almost surely, 2^549978901 is an apocalyptic number.

It is an amenable number.

549978901 is a deficient number, since it is larger than the sum of its proper divisors (15043403).

549978901 is a wasteful number, since it uses less digits than its factorization.

549978901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51251.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 549978901 is about 23451.6289626115. The cubic root of 549978901 is about 819.3107935821.

The spelling of 549978901 in words is "five hundred forty-nine million, nine hundred seventy-eight thousand, nine hundred one".