149815097 has 2 divisors, whose sum is σ = 149815098. Its totient is φ = 149815096.

The previous prime is 149815063. The next prime is 149815129. The reversal of 149815097 is 790518941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128618281 + 21196816 = 11341^2 + 4604^2 .

It is a cyclic number.

It is not a de Polignac number, because 149815097 - 2²⁴ = 133037881 is a prime.

It is not a weakly prime, because it can be changed into another prime (149815007) 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, 74907548 + 74907549.

It is an arithmetic number, because the mean of its divisors is an integer number (74907549).

Almost surely, 2^149815097 is an apocalyptic number.

It is an amenable number.

149815097 is a deficient number, since it is larger than the sum of its proper divisors (1).

149815097 is an equidigital number, since it uses as much as digits as its factorization.

149815097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 149815097 is about 12239.8977528409. The cubic root of 149815097 is about 531.1108739812.

The spelling of 149815097 in words is "one hundred forty-nine million, eight hundred fifteen thousand, ninety-seven".