154684897 has 2 divisors, whose sum is σ = 154684898. Its totient is φ = 154684896.

The previous prime is 154684861. The next prime is 154684949. The reversal of 154684897 is 798486451.

It is an a-pointer prime, because the next prime (154684949) can be obtained adding 154684897 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111703761 + 42981136 = 10569^2 + 6556^2 .

It is a cyclic number.

It is not a de Polignac number, because 154684897 - 2⁷ = 154684769 is a prime.

It is not a weakly prime, because it can be changed into another prime (154684807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77342448 + 77342449.

It is an arithmetic number, because the mean of its divisors is an integer number (77342449).

Almost surely, 2^154684897 is an apocalyptic number.

It is an amenable number.

154684897 is a deficient number, since it is larger than the sum of its proper divisors (1).

154684897 is an equidigital number, since it uses as much as digits as its factorization.

154684897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 52.

The square root of 154684897 is about 12437.2383188552. The cubic root of 154684897 is about 536.8042812008.

The spelling of 154684897 in words is "one hundred fifty-four million, six hundred eighty-four thousand, eight hundred ninety-seven".