172461749 has 2 divisors, whose sum is σ = 172461750. Its totient is φ = 172461748.

The previous prime is 172461721. The next prime is 172461761. The reversal of 172461749 is 947164271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166668100 + 5793649 = 12910^2 + 2407^2 .

It is a cyclic number.

It is not a de Polignac number, because 172461749 - 2²⁴ = 155684533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172460749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86230874 + 86230875.

It is an arithmetic number, because the mean of its divisors is an integer number (86230875).

Almost surely, 2^172461749 is an apocalyptic number.

It is an amenable number.

172461749 is a deficient number, since it is larger than the sum of its proper divisors (1).

172461749 is an equidigital number, since it uses as much as digits as its factorization.

172461749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 172461749 is about 13132.4692651458. The cubic root of 172461749 is about 556.6269916066.

The spelling of 172461749 in words is "one hundred seventy-two million, four hundred sixty-one thousand, seven hundred forty-nine".