161030572 has 12 divisors (see below), whose sum is σ = 283280256. Its totient is φ = 80093360.

The previous prime is 161030561. The next prime is 161030581. The reversal of 161030572 is 275030161.

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, 104623 + ... + 106150.

It is an arithmetic number, because the mean of its divisors is an integer number (23606688).

Almost surely, 2^161030572 is an apocalyptic number.

It is an amenable number.

161030572 is a deficient number, since it is larger than the sum of its proper divisors (122249684).

161030572 is a wasteful number, since it uses less digits than its factorization.

161030572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210968 (or 210966 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 161030572 is about 12689.7821888321. The cubic root of 161030572 is about 544.0466141933.

The spelling of 161030572 in words is "one hundred sixty-one million, thirty thousand, five hundred seventy-two".