551994730 has 32 divisors (see below), whose sum is σ = 1142787456. Its totient is φ = 188046144.

The previous prime is 551994719. The next prime is 551994851. The reversal of 551994730 is 37499155.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14124 + ... + 36103.

It is an arithmetic number, because the mean of its divisors is an integer number (35712108).

Almost surely, 2^551994730 is an apocalyptic number.

551994730 is an abundant number, since it is smaller than the sum of its proper divisors (590792726).

551994730 is a wasteful number, since it uses less digits than its factorization.

551994730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50398.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 551994730 is about 23494.5680956258. The cubic root of 551994730 is about 820.3105753944.

The spelling of 551994730 in words is "five hundred fifty-one million, nine hundred ninety-four thousand, seven hundred thirty".