149505071 has 2 divisors, whose sum is σ = 149505072. Its totient is φ = 149505070.

The previous prime is 149505061. The next prime is 149505079. The reversal of 149505071 is 170505941.

It is a strong prime.

It is an emirp because it is prime and its reverse (170505941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149505071 - 2¹⁸ = 149242927 is a prime.

It is equal to p_8418083 and since 149505071 and 8418083 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149505079) 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, 74752535 + 74752536.

It is an arithmetic number, because the mean of its divisors is an integer number (74752536).

Almost surely, 2^149505071 is an apocalyptic number.

149505071 is a deficient number, since it is larger than the sum of its proper divisors (1).

149505071 is an equidigital number, since it uses as much as digits as its factorization.

149505071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 149505071 is about 12227.2266274900. The cubic root of 149505071 is about 530.7442623054.

The spelling of 149505071 in words is "one hundred forty-nine million, five hundred five thousand, seventy-one".