20161502 has 4 divisors (see below), whose sum is σ = 30242256. Its totient is φ = 10080750.

The previous prime is 20161487. The next prime is 20161513. The reversal of 20161502 is 20516102.

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, 5040374 + ... + 5040377.

It is an arithmetic number, because the mean of its divisors is an integer number (7560564).

Almost surely, 2^20161502 is an apocalyptic number.

20161502 is a deficient number, since it is larger than the sum of its proper divisors (10080754).

20161502 is a wasteful number, since it uses less digits than its factorization.

20161502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10080753.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20161502 is about 4490.1561220073. The cubic root of 20161502 is about 272.1704435618.

Adding to 20161502 its reverse (20516102), we get a palindrome (40677604).

The spelling of 20161502 in words is "twenty million, one hundred sixty-one thousand, five hundred two".