145161241 has 4 divisors (see below), whose sum is σ = 145295872. Its totient is φ = 145026612.

The previous prime is 145161217. The next prime is 145161253. The reversal of 145161241 is 142161541.

145161241 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145161241 - 2⁵ = 145161209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145161281) 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, 65685 + ... + 67858.

It is an arithmetic number, because the mean of its divisors is an integer number (36323968).

Almost surely, 2^145161241 is an apocalyptic number.

It is an amenable number.

145161241 is a deficient number, since it is larger than the sum of its proper divisors (134631).

145161241 is a wasteful number, since it uses less digits than its factorization.

145161241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134630.

The product of its digits is 960, while the sum is 25.

The square root of 145161241 is about 12048.2878866667. The cubic root of 145161241 is about 525.5534493101.

The spelling of 145161241 in words is "one hundred forty-five million, one hundred sixty-one thousand, two hundred forty-one".