145043401 has 4 divisors (see below), whose sum is σ = 145231812. Its totient is φ = 144854992.

The previous prime is 145043399. The next prime is 145043419. The reversal of 145043401 is 104340541.

145043401 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.

It can be written as a sum of positive squares in 2 ways, for example, as 40513225 + 104530176 = 6365^2 + 10224^2 .

It is a cyclic number.

It is not a de Polignac number, because 145043401 - 2¹ = 145043399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145043491) 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, 93046 + ... + 94591.

It is an arithmetic number, because the mean of its divisors is an integer number (36307953).

Almost surely, 2^145043401 is an apocalyptic number.

It is an amenable number.

145043401 is a deficient number, since it is larger than the sum of its proper divisors (188411).

145043401 is an equidigital number, since it uses as much as digits as its factorization.

145043401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188410.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 145043401 is about 12043.3965723960. The cubic root of 145043401 is about 525.4111983348.

Adding to 145043401 its reverse (104340541), we get a palindrome (249383942).

The spelling of 145043401 in words is "one hundred forty-five million, forty-three thousand, four hundred one".