154310491 has 2 divisors, whose sum is σ = 154310492. Its totient is φ = 154310490.

The previous prime is 154310489. The next prime is 154310549. The reversal of 154310491 is 194013451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154310491 - 2¹ = 154310489 is a prime.

It is a super-2 number, since 2×154310491² = 47623455265322162, which contains 22 as substring.

Together with 154310489, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154310791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77155245 + 77155246.

It is an arithmetic number, because the mean of its divisors is an integer number (77155246).

Almost surely, 2^154310491 is an apocalyptic number.

154310491 is a deficient number, since it is larger than the sum of its proper divisors (1).

154310491 is an equidigital number, since it uses as much as digits as its factorization.

154310491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 154310491 is about 12422.1773856277. The cubic root of 154310491 is about 536.3708298818.

The spelling of 154310491 in words is "one hundred fifty-four million, three hundred ten thousand, four hundred ninety-one".