551115201 has 48 divisors (see below), whose sum is σ = 926420544. Its totient is φ = 288844416.

The previous prime is 551115151. The next prime is 551115209. The reversal of 551115201 is 102511155.

It is not a de Polignac number, because 551115201 - 2⁶ = 551115137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (551115209) 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 47 ways as a sum of consecutive naturals, for example, 329770 + ... + 331436.

It is an arithmetic number, because the mean of its divisors is an integer number (19300428).

Almost surely, 2^551115201 is an apocalyptic number.

It is an amenable number.

551115201 is a deficient number, since it is larger than the sum of its proper divisors (375305343).

551115201 is a wasteful number, since it uses less digits than its factorization.

551115201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 551115201 is about 23475.8429241636. The cubic root of 551115201 is about 819.8746591089.

Adding to 551115201 its reverse (102511155), we get a palindrome (653626356).

The spelling of 551115201 in words is "five hundred fifty-one million, one hundred fifteen thousand, two hundred one".