155136719 has 2 divisors, whose sum is σ = 155136720. Its totient is φ = 155136718.

The previous prime is 155136697. The next prime is 155136749. The reversal of 155136719 is 917631551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155136719 - 2¹² = 155132623 is a prime.

It is a super-2 number, since 2×155136719² = 48134803164169922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155136749) 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, 77568359 + 77568360.

It is an arithmetic number, because the mean of its divisors is an integer number (77568360).

Almost surely, 2^155136719 is an apocalyptic number.

155136719 is a deficient number, since it is larger than the sum of its proper divisors (1).

155136719 is an equidigital number, since it uses as much as digits as its factorization.

155136719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28350, while the sum is 38.

The square root of 155136719 is about 12455.3891549000. The cubic root of 155136719 is about 537.3264270267.

The spelling of 155136719 in words is "one hundred fifty-five million, one hundred thirty-six thousand, seven hundred nineteen".