551386723 has 2 divisors, whose sum is σ = 551386724. Its totient is φ = 551386722.

The previous prime is 551386709. The next prime is 551386763. The reversal of 551386723 is 327683155.

It is an a-pointer prime, because the next prime (551386763) can be obtained adding 551386723 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551386723 is a prime.

It is not a weakly prime, because it can be changed into another prime (551386763) 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 as a sum of consecutive naturals, namely, 275693361 + 275693362.

It is an arithmetic number, because the mean of its divisors is an integer number (275693362).

Almost surely, 2^551386723 is an apocalyptic number.

551386723 is a deficient number, since it is larger than the sum of its proper divisors (1).

551386723 is an equidigital number, since it uses as much as digits as its factorization.

551386723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The square root of 551386723 is about 23481.6252205847. The cubic root of 551386723 is about 820.0092815725.

The spelling of 551386723 in words is "five hundred fifty-one million, three hundred eighty-six thousand, seven hundred twenty-three".