161303552 has 22 divisors (see below), whose sum is σ = 322451628. Its totient is φ = 80651264.

The previous prime is 161303507. The next prime is 161303557. The reversal of 161303552 is 255303161.

It is not an unprimeable number, because it can be changed into a prime (161303557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77738 + ... + 79785.

Almost surely, 2^161303552 is an apocalyptic number.

It is an amenable number.

161303552 is a deficient number, since it is larger than the sum of its proper divisors (161148076).

161303552 is an equidigital number, since it uses as much as digits as its factorization.

161303552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157543 (or 157525 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 161303552 is about 12700.5335321001. The cubic root of 161303552 is about 544.3538643453.

The spelling of 161303552 in words is "one hundred sixty-one million, three hundred three thousand, five hundred fifty-two".