156472197 has 32 divisors (see below), whose sum is σ = 257402880. Its totient is φ = 82568640.

The previous prime is 156472109. The next prime is 156472207. The reversal of 156472197 is 791274651.

It is a happy number.

It is not a de Polignac number, because 156472197 - 2⁸ = 156471941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156472397) 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 31 ways as a sum of consecutive naturals, for example, 8422 + ... + 19592.

It is an arithmetic number, because the mean of its divisors is an integer number (8043840).

Almost surely, 2^156472197 is an apocalyptic number.

It is an amenable number.

156472197 is a deficient number, since it is larger than the sum of its proper divisors (100930683).

156472197 is a wasteful number, since it uses less digits than its factorization.

156472197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11233.

The product of its digits is 105840, while the sum is 42.

The square root of 156472197 is about 12508.8847224683. The cubic root of 156472197 is about 538.8638630073.

The spelling of 156472197 in words is "one hundred fifty-six million, four hundred seventy-two thousand, one hundred ninety-seven".