161102507 has 2 divisors, whose sum is σ = 161102508. Its totient is φ = 161102506.

The previous prime is 161102497. The next prime is 161102519. The reversal of 161102507 is 705201161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161102507 - 2¹⁰ = 161101483 is a prime.

It is a super-4 number, since 4×161102507⁴ (a number of 34 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (161102527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80551253 + 80551254.

It is an arithmetic number, because the mean of its divisors is an integer number (80551254).

Almost surely, 2^161102507 is an apocalyptic number.

161102507 is a deficient number, since it is larger than the sum of its proper divisors (1).

161102507 is an equidigital number, since it uses as much as digits as its factorization.

161102507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 161102507 is about 12692.6162393732. The cubic root of 161102507 is about 544.1276136512.

Adding to 161102507 its reverse (705201161), we get a palindrome (866303668).

The spelling of 161102507 in words is "one hundred sixty-one million, one hundred two thousand, five hundred seven".