16139057 has 4 divisors (see below), whose sum is σ = 17606256. Its totient is φ = 14671860.

The previous prime is 16139041. The next prime is 16139089. The reversal of 16139057 is 75093161.

16139057 is digitally balanced in base 2, 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16139057 - 2⁴ = 16139041 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16130057) 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, 733583 + ... + 733604.

It is an arithmetic number, because the mean of its divisors is an integer number (4401564).

Almost surely, 2^16139057 is an apocalyptic number.

It is an amenable number.

16139057 is a deficient number, since it is larger than the sum of its proper divisors (1467199).

16139057 is a wasteful number, since it uses less digits than its factorization.

16139057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467198.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 16139057 is about 4017.3445209491. The cubic root of 16139057 is about 252.7121088020.

The spelling of 16139057 in words is "sixteen million, one hundred thirty-nine thousand, fifty-seven".