154965971 has 2 divisors, whose sum is σ = 154965972. Its totient is φ = 154965970.

The previous prime is 154965929. The next prime is 154965991. The reversal of 154965971 is 179569451.

It is a strong prime.

It is an emirp because it is prime and its reverse (179569451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154965971 - 2⁶ = 154965907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154965901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77482985 + 77482986.

It is an arithmetic number, because the mean of its divisors is an integer number (77482986).

Almost surely, 2^154965971 is an apocalyptic number.

154965971 is a deficient number, since it is larger than the sum of its proper divisors (1).

154965971 is an equidigital number, since it uses as much as digits as its factorization.

154965971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 47.

The square root of 154965971 is about 12448.5328854448. The cubic root of 154965971 is about 537.1292222774.

The spelling of 154965971 in words is "one hundred fifty-four million, nine hundred sixty-five thousand, nine hundred seventy-one".