161254003 has 4 divisors (see below), whose sum is σ = 161294248. Its totient is φ = 161213760.

The previous prime is 161254001. The next prime is 161254043. The reversal of 161254003 is 300452161.

161254003 is digitally balanced in base 2, 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: 300452161 = 11909 ⋅25229.

It is a cyclic number.

It is not a de Polignac number, because 161254003 - 2¹ = 161254001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161254001) 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, 13353 + ... + 22378.

It is an arithmetic number, because the mean of its divisors is an integer number (40323562).

Almost surely, 2^161254003 is an apocalyptic number.

161254003 is a deficient number, since it is larger than the sum of its proper divisors (40245).

161254003 is an equidigital number, since it uses as much as digits as its factorization.

161254003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40244.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 161254003 is about 12698.5827161932. The cubic root of 161254003 is about 544.2981206837.

The spelling of 161254003 in words is "one hundred sixty-one million, two hundred fifty-four thousand, three".