551089887 has 4 divisors (see below), whose sum is σ = 734786520. Its totient is φ = 367393256.

The previous prime is 551089879. The next prime is 551089907. The reversal of 551089887 is 788980155.

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

It is a cyclic number.

It is not a de Polignac number, because 551089887 - 2³ = 551089879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551084887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91848312 + ... + 91848317.

It is an arithmetic number, because the mean of its divisors is an integer number (183696630).

Almost surely, 2^551089887 is an apocalyptic number.

551089887 is a deficient number, since it is larger than the sum of its proper divisors (183696633).

551089887 is a wasteful number, since it uses less digits than its factorization.

551089887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183696632.

The product of its (nonzero) digits is 806400, while the sum is 51.

The square root of 551089887 is about 23475.3037680027. The cubic root of 551089887 is about 819.8621060015.

The spelling of 551089887 in words is "five hundred fifty-one million, eighty-nine thousand, eight hundred eighty-seven".