161485502 has 4 divisors (see below), whose sum is σ = 242228256. Its totient is φ = 80742750.

The previous prime is 161485469. The next prime is 161485531. The reversal of 161485502 is 205584161.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40371374 + ... + 40371377.

It is an arithmetic number, because the mean of its divisors is an integer number (60557064).

Almost surely, 2^161485502 is an apocalyptic number.

161485502 is a deficient number, since it is larger than the sum of its proper divisors (80742754).

161485502 is an equidigital number, since it uses as much as digits as its factorization.

161485502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80742753.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 161485502 is about 12707.6945981559. The cubic root of 161485502 is about 544.5584640308.

The spelling of 161485502 in words is "one hundred sixty-one million, four hundred eighty-five thousand, five hundred two".