551372949 has 24 divisors (see below), whose sum is σ = 810239040. Its totient is φ = 361234368.

The previous prime is 551372947. The next prime is 551372953. The reversal of 551372949 is 949273155.

It is a happy number.

551372949 is a `hidden beast` number, since 551 + 3 + 7 + 2 + 94 + 9 = 666.

It is not a de Polignac number, because 551372949 - 2¹ = 551372947 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551372947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342304 + ... + 343910.

It is an arithmetic number, because the mean of its divisors is an integer number (33759960).

Almost surely, 2^551372949 is an apocalyptic number.

It is an amenable number.

551372949 is a deficient number, since it is larger than the sum of its proper divisors (258866091).

551372949 is a wasteful number, since it uses less digits than its factorization.

551372949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249 (or 2246 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 551372949 is about 23481.3319255957. The cubic root of 551372949 is about 820.0024533934.

The spelling of 551372949 in words is "five hundred fifty-one million, three hundred seventy-two thousand, nine hundred forty-nine".