551240001 has 12 divisors (see below), whose sum is σ = 857484628. Its totient is φ = 339224544.

The previous prime is 551239993. The next prime is 551240003. The reversal of 551240001 is 100042155.

It can be written as a sum of positive squares in 2 ways, for example, as 192099600 + 359140401 = 13860^2 + 18951^2 .

It is not a de Polignac number, because 551240001 - 2³ = 551239993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551240003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2355610 + ... + 2355843.

Almost surely, 2^551240001 is an apocalyptic number.

It is an amenable number.

551240001 is a deficient number, since it is larger than the sum of its proper divisors (306244627).

551240001 is a wasteful number, since it uses less digits than its factorization.

551240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711472 (or 4711469 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 551240001 is about 23478.5008252231. The cubic root of 551240001 is about 819.9365412918.

Adding to 551240001 its reverse (100042155), we get a palindrome (651282156).

The spelling of 551240001 in words is "five hundred fifty-one million, two hundred forty thousand, one".