551639093 has 4 divisors (see below), whose sum is σ = 552279168. Its totient is φ = 550999020.

The previous prime is 551639083. The next prime is 551639111. The reversal of 551639093 is 390936155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 551639093 - 2⁶ = 551639029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551639093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551639063) 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, 318743 + ... + 320468.

It is an arithmetic number, because the mean of its divisors is an integer number (138069792).

Almost surely, 2^551639093 is an apocalyptic number.

It is an amenable number.

551639093 is a deficient number, since it is larger than the sum of its proper divisors (640075).

551639093 is an equidigital number, since it uses as much as digits as its factorization.

551639093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640074.

The product of its (nonzero) digits is 109350, while the sum is 41.

The square root of 551639093 is about 23486.9983820837. The cubic root of 551639093 is about 820.1343687202.

The spelling of 551639093 in words is "five hundred fifty-one million, six hundred thirty-nine thousand, ninety-three".