154140997 has 2 divisors, whose sum is σ = 154140998. Its totient is φ = 154140996.

The previous prime is 154140983. The next prime is 154141007. The reversal of 154140997 is 799041451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130850721 + 23290276 = 11439^2 + 4826^2 .

It is a cyclic number.

It is not a de Polignac number, because 154140997 - 2⁷ = 154140869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154140967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77070498 + 77070499.

It is an arithmetic number, because the mean of its divisors is an integer number (77070499).

Almost surely, 2^154140997 is an apocalyptic number.

It is an amenable number.

154140997 is a deficient number, since it is larger than the sum of its proper divisors (1).

154140997 is an equidigital number, since it uses as much as digits as its factorization.

154140997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 154140997 is about 12415.3532772934. The cubic root of 154140997 is about 536.1743754416.

The spelling of 154140997 in words is "one hundred fifty-four million, one hundred forty thousand, nine hundred ninety-seven".