16161506 has 8 divisors (see below), whose sum is σ = 24259584. Its totient is φ = 8074980.

The previous prime is 16161499. The next prime is 16161521. The reversal of 16161506 is 60516161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16161506² = 522388552376072, which contains 22 as substring.

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, 3071 + ... + 6461.

It is an arithmetic number, because the mean of its divisors is an integer number (3032448).

Almost surely, 2^16161506 is an apocalyptic number.

16161506 is a deficient number, since it is larger than the sum of its proper divisors (8098078).

16161506 is a wasteful number, since it uses less digits than its factorization.

16161506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5776.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 16161506 is about 4020.1375598355. The cubic root of 16161506 is about 252.8292264619.

Adding to 16161506 its reverse (60516161), we get a palindrome (76677667).

The spelling of 16161506 in words is "sixteen million, one hundred sixty-one thousand, five hundred six".