551806039 has 4 divisors (see below), whose sum is σ = 552549456. Its totient is φ = 551062624.

The previous prime is 551806033. The next prime is 551806093. The reversal of 551806039 is 930608155.

551806039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 551806039 - 2⁷ = 551805911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551805989 and 551806007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551806033) 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, 370594 + ... + 372079.

It is an arithmetic number, because the mean of its divisors is an integer number (138137364).

Almost surely, 2^551806039 is an apocalyptic number.

551806039 is a deficient number, since it is larger than the sum of its proper divisors (743417).

551806039 is an equidigital number, since it uses as much as digits as its factorization.

551806039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743416.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 551806039 is about 23490.5521220767. The cubic root of 551806039 is about 820.2170945121.

The spelling of 551806039 in words is "five hundred fifty-one million, eight hundred six thousand, thirty-nine".