16655131 has 2 divisors, whose sum is σ = 16655132. Its totient is φ = 16655130.

The previous prime is 16655129. The next prime is 16655137. The reversal of 16655131 is 13155661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16655131 - 2¹ = 16655129 is a prime.

It is a super-2 number, since 2×16655131² = 554786777254322, which contains 22 as substring.

Together with 16655129, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16655131.

It is not a weakly prime, because it can be changed into another prime (16655137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8327565 + 8327566.

It is an arithmetic number, because the mean of its divisors is an integer number (8327566).

Almost surely, 2^16655131 is an apocalyptic number.

16655131 is a deficient number, since it is larger than the sum of its proper divisors (1).

16655131 is an equidigital number, since it uses as much as digits as its factorization.

16655131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 28.

The square root of 16655131 is about 4081.0698352270. The cubic root of 16655131 is about 255.3775312616.

The spelling of 16655131 in words is "sixteen million, six hundred fifty-five thousand, one hundred thirty-one".