155252211539 has 2 divisors, whose sum is σ = 155252211540. Its totient is φ = 155252211538.

The previous prime is 155252211463. The next prime is 155252211553. The reversal of 155252211539 is 935112252551.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155252211539 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 155252211496 and 155252211505.

It is not a weakly prime, because it can be changed into another prime (155252211599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77626105769 + 77626105770.

It is an arithmetic number, because the mean of its divisors is an integer number (77626105770).

Almost surely, 2^155252211539 is an apocalyptic number.

155252211539 is a deficient number, since it is larger than the sum of its proper divisors (1).

155252211539 is an equidigital number, since it uses as much as digits as its factorization.

155252211539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135000, while the sum is 41.

The spelling of 155252211539 in words is "one hundred fifty-five billion, two hundred fifty-two million, two hundred eleven thousand, five hundred thirty-nine".