549385497 has 20 divisors (see below), whose sum is σ = 821483520. Its totient is φ = 365901624.

The previous prime is 549385493. The next prime is 549385511. The reversal of 549385497 is 794583945.

549385497 is a `hidden beast` number, since 5 + 4 + 93 + 8 + 549 + 7 = 666.

It is not a de Polignac number, because 549385497 - 2² = 549385493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (549385493) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 100948 + ... + 106250.

It is an arithmetic number, because the mean of its divisors is an integer number (41074176).

Almost surely, 2^549385497 is an apocalyptic number.

It is an amenable number.

549385497 is a deficient number, since it is larger than the sum of its proper divisors (272098023).

549385497 is a wasteful number, since it uses less digits than its factorization.

549385497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6594 (or 6585 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 549385497 is about 23438.9738896565. The cubic root of 549385497 is about 819.0160202961.

The spelling of 549385497 in words is "five hundred forty-nine million, three hundred eighty-five thousand, four hundred ninety-seven".