154156997 has 2 divisors, whose sum is σ = 154156998. Its totient is φ = 154156996.

The previous prime is 154156993. The next prime is 154157033. The reversal of 154156997 is 799651451.

154156997 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., 148011556 + 6145441 = 12166^2 + 2479^2 .

It is a cyclic number.

It is not a de Polignac number, because 154156997 - 2² = 154156993 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154156993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77078498 + 77078499.

It is an arithmetic number, because the mean of its divisors is an integer number (77078499).

Almost surely, 2^154156997 is an apocalyptic number.

It is an amenable number.

154156997 is a deficient number, since it is larger than the sum of its proper divisors (1).

154156997 is an equidigital number, since it uses as much as digits as its factorization.

154156997 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 154156997 is about 12415.9976240333. The cubic root of 154156997 is about 536.1929266238.

The spelling of 154156997 in words is "one hundred fifty-four million, one hundred fifty-six thousand, nine hundred ninety-seven".