16527139 has 4 divisors (see below), whose sum is σ = 16807320. Its totient is φ = 16246960.

The previous prime is 16527109. The next prime is 16527143. The reversal of 16527139 is 93172561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93172561 = 19 ⋅4903819.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16527139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16527109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140002 + ... + 140119.

It is an arithmetic number, because the mean of its divisors is an integer number (4201830).

Almost surely, 2^16527139 is an apocalyptic number.

16527139 is a deficient number, since it is larger than the sum of its proper divisors (280181).

16527139 is an equidigital number, since it uses as much as digits as its factorization.

16527139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280180.

The product of its digits is 11340, while the sum is 34.

The square root of 16527139 is about 4065.3584097838. The cubic root of 16527139 is about 254.7216699158.

The spelling of 16527139 in words is "sixteen million, five hundred twenty-seven thousand, one hundred thirty-nine".