156201149 has 4 divisors (see below), whose sum is σ = 168216636. Its totient is φ = 144185664.

The previous prime is 156201139. The next prime is 156201167. The reversal of 156201149 is 941102651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 941102651 = 27427 ⋅34313.

It can be written as a sum of positive squares in 2 ways, for example, as 101707225 + 54493924 = 10085^2 + 7382^2 .

It is a cyclic number.

It is not a de Polignac number, because 156201149 - 2¹² = 156197053 is a prime.

It is a super-3 number, since 3×156201149³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156201139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6007724 + ... + 6007749.

It is an arithmetic number, because the mean of its divisors is an integer number (42054159).

Almost surely, 2^156201149 is an apocalyptic number.

It is an amenable number.

156201149 is a deficient number, since it is larger than the sum of its proper divisors (12015487).

156201149 is a wasteful number, since it uses less digits than its factorization.

156201149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12015486.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 156201149 is about 12498.0458072452. The cubic root of 156201149 is about 538.5525353030.

The spelling of 156201149 in words is "one hundred fifty-six million, two hundred one thousand, one hundred forty-nine".