549897810 has 384 divisors, whose sum is σ = 1875363840. Its totient is φ = 100362240.

The previous prime is 549897787. The next prime is 549897851. The reversal of 549897810 is 18798945.

It is a super-2 number, since 2×549897810² = 604775202885592200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8207397 + ... + 8207463.

It is an arithmetic number, because the mean of its divisors is an integer number (4883760).

Almost surely, 2^549897810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549897810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (937681920).

549897810 is an abundant number, since it is smaller than the sum of its proper divisors (1325466030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549897810 is a wasteful number, since it uses less digits than its factorization.

549897810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 549897810 is about 23449.8999997868. The cubic root of 549897810 is about 819.2705241603.

The spelling of 549897810 in words is "five hundred forty-nine million, eight hundred ninety-seven thousand, eight hundred ten".