149564071 has 2 divisors, whose sum is σ = 149564072. Its totient is φ = 149564070.

The previous prime is 149564059. The next prime is 149564111. The reversal of 149564071 is 170465941.

149564071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (170465941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149564071 - 2¹⁷ = 149432999 is a prime.

It is a super-2 number, since 2×149564071² = 44738822668186082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 149564071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149564021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74782035 + 74782036.

It is an arithmetic number, because the mean of its divisors is an integer number (74782036).

Almost surely, 2^149564071 is an apocalyptic number.

149564071 is a deficient number, since it is larger than the sum of its proper divisors (1).

149564071 is an equidigital number, since it uses as much as digits as its factorization.

149564071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 149564071 is about 12229.6390380093. The cubic root of 149564071 is about 530.8140699558.

The spelling of 149564071 in words is "one hundred forty-nine million, five hundred sixty-four thousand, seventy-one".