156661244 has 12 divisors (see below), whose sum is σ = 274440768. Its totient is φ = 78249600.

The previous prime is 156661229. The next prime is 156661247. The reversal of 156661244 is 442166651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156661247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15797 + ... + 23724.

It is an arithmetic number, because the mean of its divisors is an integer number (22870064).

Almost surely, 2^156661244 is an apocalyptic number.

It is an amenable number.

156661244 is a deficient number, since it is larger than the sum of its proper divisors (117779524).

156661244 is a wasteful number, since it uses less digits than its factorization.

156661244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40516 (or 40514 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 156661244 is about 12516.4389504363. The cubic root of 156661244 is about 539.0807909985.

The spelling of 156661244 in words is "one hundred fifty-six million, six hundred sixty-one thousand, two hundred forty-four".