154898987 has 2 divisors, whose sum is σ = 154898988. Its totient is φ = 154898986.

The previous prime is 154898969. The next prime is 154899023. The reversal of 154898987 is 789898451.

154898987 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 is a cyclic number.

It is not a de Polignac number, because 154898987 - 2⁶ = 154898923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154898957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77449493 + 77449494.

It is an arithmetic number, because the mean of its divisors is an integer number (77449494).

Almost surely, 2^154898987 is an apocalyptic number.

154898987 is a deficient number, since it is larger than the sum of its proper divisors (1).

154898987 is an equidigital number, since it uses as much as digits as its factorization.

154898987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 59.

The square root of 154898987 is about 12445.8421571222. The cubic root of 154898987 is about 537.0518198025.

The spelling of 154898987 in words is "one hundred fifty-four million, eight hundred ninety-eight thousand, nine hundred eighty-seven".