154591147 has 2 divisors, whose sum is σ = 154591148. Its totient is φ = 154591146.

The previous prime is 154591127. The next prime is 154591153. The reversal of 154591147 is 741195451.

It is a strong prime.

It is an emirp because it is prime and its reverse (741195451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154591147 - 2¹⁹ = 154066859 is a prime.

It is not a weakly prime, because it can be changed into another prime (154591117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77295573 + 77295574.

It is an arithmetic number, because the mean of its divisors is an integer number (77295574).

Almost surely, 2^154591147 is an apocalyptic number.

154591147 is a deficient number, since it is larger than the sum of its proper divisors (1).

154591147 is an equidigital number, since it uses as much as digits as its factorization.

154591147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 37.

The square root of 154591147 is about 12433.4688241054. The cubic root of 154591147 is about 536.6958121503.

The spelling of 154591147 in words is "one hundred fifty-four million, five hundred ninety-one thousand, one hundred forty-seven".