16172461 has 2 divisors, whose sum is σ = 16172462. Its totient is φ = 16172460.

The previous prime is 16172449. The next prime is 16172479. The reversal of 16172461 is 16427161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12823561 + 3348900 = 3581^2 + 1830^2 .

It is a cyclic number.

It is not a de Polignac number, because 16172461 - 2²¹ = 14075309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16172861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8086230 + 8086231.

It is an arithmetic number, because the mean of its divisors is an integer number (8086231).

Almost surely, 2^16172461 is an apocalyptic number.

It is an amenable number.

16172461 is a deficient number, since it is larger than the sum of its proper divisors (1).

16172461 is an equidigital number, since it uses as much as digits as its factorization.

16172461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 16172461 is about 4021.4998445854. The cubic root of 16172461 is about 252.8863399222.

The spelling of 16172461 in words is "sixteen million, one hundred seventy-two thousand, four hundred sixty-one".