161303526 has 48 divisors (see below), whose sum is σ = 355212000. Its totient is φ = 52896384.

The previous prime is 161303507. The next prime is 161303557. The reversal of 161303526 is 625303161.

161303526 is a `hidden beast` number, since 1 + 6 + 130 + 3 + 526 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 161303526.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 367215 + ... + 367653.

It is an arithmetic number, because the mean of its divisors is an integer number (7400250).

Almost surely, 2^161303526 is an apocalyptic number.

161303526 is an abundant number, since it is smaller than the sum of its proper divisors (193908474).

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

161303526 is a wasteful number, since it uses less digits than its factorization.

161303526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 161303526 is about 12700.5325085211. The cubic root of 161303526 is about 544.3538350978.

Adding to 161303526 its reverse (625303161), we get a palindrome (786606687).

The spelling of 161303526 in words is "one hundred sixty-one million, three hundred three thousand, five hundred twenty-six".