161527255 has 4 divisors (see below), whose sum is σ = 193832712. Its totient is φ = 129221800.

The previous prime is 161527253. The next prime is 161527259. The reversal of 161527255 is 552725161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552725161 = 3461 ⋅159701.

It is not a de Polignac number, because 161527255 - 2¹ = 161527253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161527255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161527253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16152721 + ... + 16152730.

It is an arithmetic number, because the mean of its divisors is an integer number (48458178).

Almost surely, 2^161527255 is an apocalyptic number.

161527255 is a deficient number, since it is larger than the sum of its proper divisors (32305457).

161527255 is an equidigital number, since it uses as much as digits as its factorization.

161527255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32305456.

The product of its digits is 21000, while the sum is 34.

The square root of 161527255 is about 12709.3373155330. The cubic root of 161527255 is about 544.6053928881.

The spelling of 161527255 in words is "one hundred sixty-one million, five hundred twenty-seven thousand, two hundred fifty-five".