161055532 has 12 divisors (see below), whose sum is σ = 307469736. Its totient is φ = 73207040.

The previous prime is 161055529. The next prime is 161055541. The reversal of 161055532 is 235550161.

It is a self number, because there is not a number n which added to its sum of digits gives 161055532.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830133 + ... + 1830220.

It is an arithmetic number, because the mean of its divisors is an integer number (25622478).

Almost surely, 2^161055532 is an apocalyptic number.

It is an amenable number.

161055532 is a deficient number, since it is larger than the sum of its proper divisors (146414204).

161055532 is a wasteful number, since it uses less digits than its factorization.

161055532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660368 (or 3660366 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 161055532 is about 12690.7656191421. The cubic root of 161055532 is about 544.0747221105.

The spelling of 161055532 in words is "one hundred sixty-one million, fifty-five thousand, five hundred thirty-two".