154155091 has 2 divisors, whose sum is σ = 154155092. Its totient is φ = 154155090.

The previous prime is 154155077. The next prime is 154155107. The reversal of 154155091 is 190551451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154155091 - 2¹⁹ = 153630803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154155011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77077545 + 77077546.

It is an arithmetic number, because the mean of its divisors is an integer number (77077546).

Almost surely, 2^154155091 is an apocalyptic number.

154155091 is a deficient number, since it is larger than the sum of its proper divisors (1).

154155091 is an equidigital number, since it uses as much as digits as its factorization.

154155091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 154155091 is about 12415.9208679824. The cubic root of 154155091 is about 536.1907167816.

The spelling of 154155091 in words is "one hundred fifty-four million, one hundred fifty-five thousand, ninety-one".