551720774 has 8 divisors (see below), whose sum is σ = 902815848. Its totient is φ = 250782160.

The previous prime is 551720749. The next prime is 551720777. The reversal of 551720774 is 477027155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551720777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12539087 + ... + 12539130.

It is an arithmetic number, because the mean of its divisors is an integer number (112851981).

Almost surely, 2^551720774 is an apocalyptic number.

551720774 is a deficient number, since it is larger than the sum of its proper divisors (351095074).

551720774 is a wasteful number, since it uses less digits than its factorization.

551720774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25078230.

The product of its (nonzero) digits is 68600, while the sum is 38.

The square root of 551720774 is about 23488.7371733774. The cubic root of 551720774 is about 820.1748457218.

The spelling of 551720774 in words is "five hundred fifty-one million, seven hundred twenty thousand, seven hundred seventy-four".