161370502 has 4 divisors (see below), whose sum is σ = 242055756. Its totient is φ = 80685250.

The previous prime is 161370499. The next prime is 161370523. The reversal of 161370502 is 205073161.

161370502 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 205073161 = 167 ⋅1227983.

It is a congruent 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 as a sum of consecutive naturals, namely, 40342624 + ... + 40342627.

It is an arithmetic number, because the mean of its divisors is an integer number (60513939).

Almost surely, 2^161370502 is an apocalyptic number.

161370502 is a deficient number, since it is larger than the sum of its proper divisors (80685254).

161370502 is an equidigital number, since it uses as much as digits as its factorization.

161370502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80685253.

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

The square root of 161370502 is about 12703.1689747086. The cubic root of 161370502 is about 544.4291663660.

The spelling of 161370502 in words is "one hundred sixty-one million, three hundred seventy thousand, five hundred two".