171627493 has 2 divisors, whose sum is σ = 171627494. Its totient is φ = 171627492.

The previous prime is 171627487. The next prime is 171627499. The reversal of 171627493 is 394726171.

It is a balanced prime because it is at equal distance from previous prime (171627487) and next prime (171627499).

It can be written as a sum of positive squares in only one way, i.e., 103184964 + 68442529 = 10158^2 + 8273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171627493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171627499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85813746 + 85813747.

It is an arithmetic number, because the mean of its divisors is an integer number (85813747).

Almost surely, 2^171627493 is an apocalyptic number.

It is an amenable number.

171627493 is a deficient number, since it is larger than the sum of its proper divisors (1).

171627493 is an equidigital number, since it uses as much as digits as its factorization.

171627493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 171627493 is about 13100.6676547419. The cubic root of 171627493 is about 555.7280092723.

The spelling of 171627493 in words is "one hundred seventy-one million, six hundred twenty-seven thousand, four hundred ninety-three".