549957897 has 8 divisors (see below), whose sum is σ = 814752480. Its totient is φ = 366638580.

The previous prime is 549957841. The next prime is 549957901. The reversal of 549957897 is 798759945.

549957897 is a `hidden beast` number, since 5 + 499 + 57 + 8 + 97 = 666.

It is not a de Polignac number, because 549957897 - 2⁶ = 549957833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (549957797) 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, 10184379 + ... + 10184432.

It is an arithmetic number, because the mean of its divisors is an integer number (101844060).

Almost surely, 2^549957897 is an apocalyptic number.

It is an amenable number.

549957897 is a deficient number, since it is larger than the sum of its proper divisors (264794583).

549957897 is a wasteful number, since it uses less digits than its factorization.

549957897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20368820 (or 20368814 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 63.

The square root of 549957897 is about 23451.1811429616. The cubic root of 549957897 is about 819.3003634711.

The spelling of 549957897 in words is "five hundred forty-nine million, nine hundred fifty-seven thousand, eight hundred ninety-seven".