44531021 has 2 divisors, whose sum is σ = 44531022. Its totient is φ = 44531020.

The previous prime is 44530999. The next prime is 44531033. The reversal of 44531021 is 12013544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43375396 + 1155625 = 6586^2 + 1075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44531021 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 44530984 and 44531002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44531321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22265510 + 22265511.

It is an arithmetic number, because the mean of its divisors is an integer number (22265511).

Almost surely, 2^44531021 is an apocalyptic number.

It is an amenable number.

44531021 is a deficient number, since it is larger than the sum of its proper divisors (1).

44531021 is an equidigital number, since it uses as much as digits as its factorization.

44531021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 44531021 is about 6673.1567492454. The cubic root of 44531021 is about 354.4493771722.

Adding to 44531021 its reverse (12013544), we get a palindrome (56544565).

The spelling of 44531021 in words is "forty-four million, five hundred thirty-one thousand, twenty-one".