549553857 has 16 divisors (see below), whose sum is σ = 759170880. Its totient is φ = 353192000.

The previous prime is 549553843. The next prime is 549553861. The reversal of 549553857 is 758355945.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 549553857 - 2⁶ = 549553793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (549553817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56482 + ... + 65492.

It is an arithmetic number, because the mean of its divisors is an integer number (47448180).

Almost surely, 2^549553857 is an apocalyptic number.

It is an amenable number.

549553857 is a deficient number, since it is larger than the sum of its proper divisors (209617023).

549553857 is a wasteful number, since it uses less digits than its factorization.

549553857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9744.

The product of its digits is 3780000, while the sum is 51.

The square root of 549553857 is about 23442.5650686950. The cubic root of 549553857 is about 819.0996746425.

The spelling of 549553857 in words is "five hundred forty-nine million, five hundred fifty-three thousand, eight hundred fifty-seven".