551779739 has 12 divisors (see below), whose sum is σ = 643233600. Its totient is φ = 471946608.

The previous prime is 551779733. The next prime is 551779751. The reversal of 551779739 is 937977155.

It is not a de Polignac number, because 551779739 - 2¹² = 551775643 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551779733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11717 + ... + 35225.

It is an arithmetic number, because the mean of its divisors is an integer number (53602800).

Almost surely, 2^551779739 is an apocalyptic number.

551779739 is a deficient number, since it is larger than the sum of its proper divisors (91453861).

551779739 is a wasteful number, since it uses less digits than its factorization.

551779739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24002 (or 23995 counting only the distinct ones).

The product of its digits is 2083725, while the sum is 53.

The square root of 551779739 is about 23489.9923158778. The cubic root of 551779739 is about 820.2040633316.

The spelling of 551779739 in words is "five hundred fifty-one million, seven hundred seventy-nine thousand, seven hundred thirty-nine".