161005627 has 2 divisors, whose sum is σ = 161005628. Its totient is φ = 161005626.

The previous prime is 161005619. The next prime is 161005673. The reversal of 161005627 is 726500161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161005627 - 2³ = 161005619 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 161005595 and 161005604.

It is not a weakly prime, because it can be changed into another prime (161005687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80502813 + 80502814.

It is an arithmetic number, because the mean of its divisors is an integer number (80502814).

Almost surely, 2^161005627 is an apocalyptic number.

161005627 is a deficient number, since it is larger than the sum of its proper divisors (1).

161005627 is an equidigital number, since it uses as much as digits as its factorization.

161005627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 161005627 is about 12688.7992733749. The cubic root of 161005627 is about 544.0185202659.

Adding to 161005627 its reverse (726500161), we get a palindrome (887505788).

The spelling of 161005627 in words is "one hundred sixty-one million, five thousand, six hundred twenty-seven".