161011528 has 32 divisors (see below), whose sum is σ = 307618560. Its totient is φ = 78991360.

The previous prime is 161011481. The next prime is 161011577. The reversal of 161011528 is 825110161.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 145425 + ... + 146527.

It is an arithmetic number, because the mean of its divisors is an integer number (9613080).

Almost surely, 2^161011528 is an apocalyptic number.

It is an amenable number.

161011528 is a deficient number, since it is larger than the sum of its proper divisors (146607032).

161011528 is a wasteful number, since it uses less digits than its factorization.

161011528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 161011528 is about 12689.0317991563. The cubic root of 161011528 is about 544.0251664395.

Adding to 161011528 its reverse (825110161), we get a palindrome (986121689).

The spelling of 161011528 in words is "one hundred sixty-one million, eleven thousand, five hundred twenty-eight".