550556149 has 8 divisors (see below), whose sum is σ = 646807392. Its totient is φ = 462005040.

The previous prime is 550556143. The next prime is 550556177. The reversal of 550556149 is 941655055.

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 550556149 - 2⁷ = 550556021 is a prime.

It is a super-2 number, since 2×550556149² = 606224146403420402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550556143) 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, 1924879 + ... + 1925164.

It is an arithmetic number, because the mean of its divisors is an integer number (80850924).

Almost surely, 2^550556149 is an apocalyptic number.

It is an amenable number.

550556149 is a deficient number, since it is larger than the sum of its proper divisors (96251243).

550556149 is a wasteful number, since it uses less digits than its factorization.

550556149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850067.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 550556149 is about 23463.9329397269. The cubic root of 550556149 is about 819.5973379977.

The spelling of 550556149 in words is "five hundred fifty million, five hundred fifty-six thousand, one hundred forty-nine".