16121759 has 2 divisors, whose sum is σ = 16121760. Its totient is φ = 16121758.

The previous prime is 16121753. The next prime is 16121779. The reversal of 16121759 is 95712161.

It is a weak prime.

It is an emirp because it is prime and its reverse (95712161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16121759 is a prime.

It is a super-2 number, since 2×16121759² = 519822226508162, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16121753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8060879 + 8060880.

It is an arithmetic number, because the mean of its divisors is an integer number (8060880).

Almost surely, 2^16121759 is an apocalyptic number.

16121759 is a deficient number, since it is larger than the sum of its proper divisors (1).

16121759 is an equidigital number, since it uses as much as digits as its factorization.

16121759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 32.

The square root of 16121759 is about 4015.1910290794. The cubic root of 16121759 is about 252.6217900850.

The spelling of 16121759 in words is "sixteen million, one hundred twenty-one thousand, seven hundred fifty-nine".