155064977 has 2 divisors, whose sum is σ = 155064978. Its totient is φ = 155064976.

The previous prime is 155064961. The next prime is 155065013. The reversal of 155064977 is 779460551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154654096 + 410881 = 12436^2 + 641^2 .

It is a cyclic number.

It is not a de Polignac number, because 155064977 - 2⁴ = 155064961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155064937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77532488 + 77532489.

It is an arithmetic number, because the mean of its divisors is an integer number (77532489).

Almost surely, 2^155064977 is an apocalyptic number.

It is an amenable number.

155064977 is a deficient number, since it is larger than the sum of its proper divisors (1).

155064977 is an equidigital number, since it uses as much as digits as its factorization.

155064977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 155064977 is about 12452.5088636788. The cubic root of 155064977 is about 537.2435865134.

The spelling of 155064977 in words is "one hundred fifty-five million, sixty-four thousand, nine hundred seventy-seven".