155324501551 has 2 divisors, whose sum is σ = 155324501552. Its totient is φ = 155324501550.

The previous prime is 155324501513. The next prime is 155324501561. The reversal of 155324501551 is 155105423551.

155324501551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155324501551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155324501551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155324501561) 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, 77662250775 + 77662250776.

It is an arithmetic number, because the mean of its divisors is an integer number (77662250776).

Almost surely, 2^155324501551 is an apocalyptic number.

155324501551 is a deficient number, since it is larger than the sum of its proper divisors (1).

155324501551 is an equidigital number, since it uses as much as digits as its factorization.

155324501551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75000, while the sum is 37.

The spelling of 155324501551 in words is "one hundred fifty-five billion, three hundred twenty-four million, five hundred one thousand, five hundred fifty-one".