1551324899 has 2 divisors, whose sum is σ = 1551324900. Its totient is φ = 1551324898.

The previous prime is 1551324877. The next prime is 1551324923. The reversal of 1551324899 is 9984231551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1551324899 - 2¹⁶ = 1551259363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1551324799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775662449 + 775662450.

It is an arithmetic number, because the mean of its divisors is an integer number (775662450).

Almost surely, 2^1551324899 is an apocalyptic number.

1551324899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551324899 is an equidigital number, since it uses as much as digits as its factorization.

1551324899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 47.

The square root of 1551324899 is about 39386.8620100663. The cubic root of 1551324899 is about 1157.6241749393.

The spelling of 1551324899 in words is "one billion, five hundred fifty-one million, three hundred twenty-four thousand, eight hundred ninety-nine".