551531520629 has 2 divisors, whose sum is σ = 551531520630. Its totient is φ = 551531520628.

The previous prime is 551531520601. The next prime is 551531520667. The reversal of 551531520629 is 926025135155.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 351921832900 + 199609687729 = 593230^2 + 446777^2 .

It is a cyclic number.

It is not a de Polignac number, because 551531520629 - 2¹⁶ = 551531455093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551531520629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551531520229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275765760314 + 275765760315.

It is an arithmetic number, because the mean of its divisors is an integer number (275765760315).

Almost surely, 2^551531520629 is an apocalyptic number.

It is an amenable number.

551531520629 is a deficient number, since it is larger than the sum of its proper divisors (1).

551531520629 is an equidigital number, since it uses as much as digits as its factorization.

551531520629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405000, while the sum is 44.

The spelling of 551531520629 in words is "five hundred fifty-one billion, five hundred thirty-one million, five hundred twenty thousand, six hundred twenty-nine".