154140617 has 2 divisors, whose sum is σ = 154140618. Its totient is φ = 154140616.

The previous prime is 154140611. The next prime is 154140647. The reversal of 154140617 is 716041451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108388921 + 45751696 = 10411^2 + 6764^2 .

It is a cyclic number.

It is not a de Polignac number, because 154140617 - 2¹⁰ = 154139593 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154140617.

It is not a weakly prime, because it can be changed into another prime (154140611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77070308 + 77070309.

It is an arithmetic number, because the mean of its divisors is an integer number (77070309).

Almost surely, 2^154140617 is an apocalyptic number.

It is an amenable number.

154140617 is a deficient number, since it is larger than the sum of its proper divisors (1).

154140617 is an equidigital number, since it uses as much as digits as its factorization.

154140617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 154140617 is about 12415.3379736518. The cubic root of 154140617 is about 536.1739348354.

The spelling of 154140617 in words is "one hundred fifty-four million, one hundred forty thousand, six hundred seventeen".