44040253 has 2 divisors, whose sum is σ = 44040254. Its totient is φ = 44040252.

The previous prime is 44040187. The next prime is 44040257. The reversal of 44040253 is 35204044.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40284409 + 3755844 = 6347^2 + 1938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44040253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44040257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22020126 + 22020127.

It is an arithmetic number, because the mean of its divisors is an integer number (22020127).

Almost surely, 2^44040253 is an apocalyptic number.

It is an amenable number.

44040253 is a deficient number, since it is larger than the sum of its proper divisors (1).

44040253 is an equidigital number, since it uses as much as digits as its factorization.

44040253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 44040253 is about 6636.2830711174. The cubic root of 44040253 is about 353.1424576223.

Adding to 44040253 its reverse (35204044), we get a palindrome (79244297).

The spelling of 44040253 in words is "forty-four million, forty thousand, two hundred fifty-three".