136172473 has 2 divisors, whose sum is σ = 136172474. Its totient is φ = 136172472.

The previous prime is 136172461. The next prime is 136172483. The reversal of 136172473 is 374271631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96884649 + 39287824 = 9843^2 + 6268^2 .

It is an emirp because it is prime and its reverse (374271631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136172473 - 2⁹ = 136171961 is a prime.

It is not a weakly prime, because it can be changed into another prime (136172483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68086236 + 68086237.

It is an arithmetic number, because the mean of its divisors is an integer number (68086237).

Almost surely, 2^136172473 is an apocalyptic number.

It is an amenable number.

136172473 is a deficient number, since it is larger than the sum of its proper divisors (1).

136172473 is an equidigital number, since it uses as much as digits as its factorization.

136172473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 34.

The square root of 136172473 is about 11669.2961655791. The cubic root of 136172473 is about 514.4736168139.

The spelling of 136172473 in words is "one hundred thirty-six million, one hundred seventy-two thousand, four hundred seventy-three".