156561214 has 8 divisors (see below), whose sum is σ = 236059200. Its totient is φ = 77874816.

The previous prime is 156561203. The next prime is 156561217. The reversal of 156561214 is 412165651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×156561214² = 49022827458307592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156561217) 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, 202414 + ... + 203185.

It is an arithmetic number, because the mean of its divisors is an integer number (29507400).

Almost surely, 2^156561214 is an apocalyptic number.

156561214 is a deficient number, since it is larger than the sum of its proper divisors (79497986).

156561214 is a wasteful number, since it uses less digits than its factorization.

156561214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405794.

The product of its digits is 7200, while the sum is 31.

The square root of 156561214 is about 12512.4423674996. The cubic root of 156561214 is about 538.9660301483.

The spelling of 156561214 in words is "one hundred fifty-six million, five hundred sixty-one thousand, two hundred fourteen".