149271061 has 4 divisors (see below), whose sum is σ = 153305452. Its totient is φ = 145236672.

The previous prime is 149271043. The next prime is 149271151. The reversal of 149271061 is 160172941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160172941 = 2677 ⋅59833.

It can be written as a sum of positive squares in 2 ways, for example, as 79548561 + 69722500 = 8919^2 + 8350^2 .

It is a cyclic number.

It is not a de Polignac number, because 149271061 - 2²¹ = 147173909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149271041) 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 in 3 ways as a sum of consecutive naturals, for example, 2017140 + ... + 2017213.

It is an arithmetic number, because the mean of its divisors is an integer number (38326363).

Almost surely, 2^149271061 is an apocalyptic number.

It is an amenable number.

149271061 is a deficient number, since it is larger than the sum of its proper divisors (4034391).

149271061 is an equidigital number, since it uses as much as digits as its factorization.

149271061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034390.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 149271061 is about 12217.6536618125. The cubic root of 149271061 is about 530.4672052115.

The spelling of 149271061 in words is "one hundred forty-nine million, two hundred seventy-one thousand, sixty-one".