551280086 has 48 divisors (see below), whose sum is σ = 982152864. Its totient is φ = 231348096.

The previous prime is 551280049. The next prime is 551280089. The reversal of 551280086 is 680082155.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551280089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1881356 + ... + 1881648.

It is an arithmetic number, because the mean of its divisors is an integer number (20461518).

Almost surely, 2^551280086 is an apocalyptic number.

551280086 is a deficient number, since it is larger than the sum of its proper divisors (430872778).

551280086 is a wasteful number, since it uses less digits than its factorization.

551280086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 551280086 is about 23479.3544630171. The cubic root of 551280086 is about 819.9564154903.

The spelling of 551280086 in words is "five hundred fifty-one million, two hundred eighty thousand, eighty-six".