161061254 has 4 divisors (see below), whose sum is σ = 241591884. Its totient is φ = 80530626.

The previous prime is 161061227. The next prime is 161061269. The reversal of 161061254 is 452160161.

161061254 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 452160161 = 1229 ⋅367909.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40265312 + ... + 40265315.

It is an arithmetic number, because the mean of its divisors is an integer number (60397971).

Almost surely, 2^161061254 is an apocalyptic number.

161061254 is a deficient number, since it is larger than the sum of its proper divisors (80530630).

161061254 is an equidigital number, since it uses as much as digits as its factorization.

161061254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80530629.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 161061254 is about 12690.9910566512. The cubic root of 161061254 is about 544.0811653512.

The spelling of 161061254 in words is "one hundred sixty-one million, sixty-one thousand, two hundred fifty-four".