155145377 has 2 divisors, whose sum is σ = 155145378. Its totient is φ = 155145376.

The previous prime is 155145371. The next prime is 155145391. The reversal of 155145377 is 773541551.

155145377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127938721 + 27206656 = 11311^2 + 5216^2 .

It is an emirp because it is prime and its reverse (773541551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155145377 - 2⁸ = 155145121 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155145377.

It is not a weakly prime, because it can be changed into another prime (155145371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77572688 + 77572689.

It is an arithmetic number, because the mean of its divisors is an integer number (77572689).

Almost surely, 2^155145377 is an apocalyptic number.

It is an amenable number.

155145377 is a deficient number, since it is larger than the sum of its proper divisors (1).

155145377 is an equidigital number, since it uses as much as digits as its factorization.

155145377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73500, while the sum is 38.

The square root of 155145377 is about 12455.7367104479. The cubic root of 155145377 is about 537.3364226952.

The spelling of 155145377 in words is "one hundred fifty-five million, one hundred forty-five thousand, three hundred seventy-seven".