551051155 has 4 divisors (see below), whose sum is σ = 661261392. Its totient is φ = 440840920.

The previous prime is 551051131. The next prime is 551051203. The reversal of 551051155 is 551150155.

551051155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-551051155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55105111 + ... + 55105120.

It is an arithmetic number, because the mean of its divisors is an integer number (165315348).

Almost surely, 2^551051155 is an apocalyptic number.

551051155 is a deficient number, since it is larger than the sum of its proper divisors (110210237).

551051155 is a wasteful number, since it uses less digits than its factorization.

551051155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110210236.

The product of its (nonzero) digits is 3125, while the sum is 28.

The square root of 551051155 is about 23474.4788014558. The cubic root of 551051155 is about 819.8428982197.

It can be divided in two parts, 5510 and 51155, that added together give a palindrome (56665).

The spelling of 551051155 in words is "five hundred fifty-one million, fifty-one thousand, one hundred fifty-five".