156165560 has 64 divisors (see below), whose sum is σ = 376941600. Its totient is φ = 58046976.

The previous prime is 156165557. The next prime is 156165563. The reversal of 156165560 is 65561651.

It is an interprime number because it is at equal distance from previous prime (156165557) and next prime (156165563).

It is a super-2 number, since 2×156165560² = 48775364260227200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 156165560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156165563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38342 + ... + 42218.

Almost surely, 2^156165560 is an apocalyptic number.

156165560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156165560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188470800).

156165560 is an abundant number, since it is smaller than the sum of its proper divisors (220776040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156165560 is a wasteful number, since it uses less digits than its factorization.

156165560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960 (or 3956 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 156165560 is about 12496.6219435494. The cubic root of 156165560 is about 538.5116307768.

The spelling of 156165560 in words is "one hundred fifty-six million, one hundred sixty-five thousand, five hundred sixty".