551911149 has 12 divisors (see below), whose sum is σ = 815745216. Its totient is φ = 359383752.

The previous prime is 551911147. The next prime is 551911153. The reversal of 551911149 is 941119155.

551911149 is a `hidden beast` number, since 551 + 91 + 1 + 14 + 9 = 666.

It is not a de Polignac number, because 551911149 - 2¹ = 551911147 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551911147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712677 + ... + 713450.

It is an arithmetic number, because the mean of its divisors is an integer number (67978768).

Almost surely, 2^551911149 is an apocalyptic number.

It is an amenable number.

551911149 is a deficient number, since it is larger than the sum of its proper divisors (263834067).

551911149 is a wasteful number, since it uses less digits than its factorization.

551911149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426176 (or 1426173 counting only the distinct ones).

The product of its digits is 8100, while the sum is 36.

The square root of 551911149 is about 23492.7892979952. The cubic root of 551911149 is about 820.2691705070.

The spelling of 551911149 in words is "five hundred fifty-one million, nine hundred eleven thousand, one hundred forty-nine".