154052989 has 2 divisors, whose sum is σ = 154052990. Its totient is φ = 154052988.

The previous prime is 154052957. The next prime is 154053019. The reversal of 154052989 is 989250451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142205625 + 11847364 = 11925^2 + 3442^2 .

It is a cyclic number.

It is not a de Polignac number, because 154052989 - 2⁵ = 154052957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154052939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77026494 + 77026495.

It is an arithmetic number, because the mean of its divisors is an integer number (77026495).

Almost surely, 2^154052989 is an apocalyptic number.

It is an amenable number.

154052989 is a deficient number, since it is larger than the sum of its proper divisors (1).

154052989 is an equidigital number, since it uses as much as digits as its factorization.

154052989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 154052989 is about 12411.8084500205. The cubic root of 154052989 is about 536.0723117057.

The spelling of 154052989 in words is "one hundred fifty-four million, fifty-two thousand, nine hundred eighty-nine".