551904497723 has 4 divisors (see below), whose sum is σ = 556117509288. Its totient is φ = 547691486160.

The previous prime is 551904497719. The next prime is 551904497731. The reversal of 551904497723 is 327794409155.

It is a happy number.

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 551904497723 - 2² = 551904497719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551904437723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2106505586 + ... + 2106505847.

It is an arithmetic number, because the mean of its divisors is an integer number (139029377322).

Almost surely, 2^551904497723 is an apocalyptic number.

551904497723 is a deficient number, since it is larger than the sum of its proper divisors (4213011565).

551904497723 is a wasteful number, since it uses less digits than its factorization.

551904497723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4213011564.

The product of its (nonzero) digits is 9525600, while the sum is 56.

The spelling of 551904497723 in words is "five hundred fifty-one billion, nine hundred four million, four hundred ninety-seven thousand, seven hundred twenty-three".