154312061 has 2 divisors, whose sum is σ = 154312062. Its totient is φ = 154312060.

The previous prime is 154312051. The next prime is 154312073. The reversal of 154312061 is 160213451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153908836 + 403225 = 12406^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 154312061 - 2¹⁴ = 154295677 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154312051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77156030 + 77156031.

It is an arithmetic number, because the mean of its divisors is an integer number (77156031).

Almost surely, 2^154312061 is an apocalyptic number.

It is an amenable number.

154312061 is a deficient number, since it is larger than the sum of its proper divisors (1).

154312061 is an equidigital number, since it uses as much as digits as its factorization.

154312061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 154312061 is about 12422.2405788972. The cubic root of 154312061 is about 536.3726489402.

The spelling of 154312061 in words is "one hundred fifty-four million, three hundred twelve thousand, sixty-one".