44531421 has 16 divisors (see below), whose sum is σ = 68183040. Its totient is φ = 25567920.

The previous prime is 44531369. The next prime is 44531447. The reversal of 44531421 is 12413544.

It is not a de Polignac number, because 44531421 - 2¹⁰ = 44530397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44531391 and 44531400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44531491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34885 + ... + 36138.

It is an arithmetic number, because the mean of its divisors is an integer number (4261440).

Almost surely, 2^44531421 is an apocalyptic number.

It is an amenable number.

44531421 is a deficient number, since it is larger than the sum of its proper divisors (23651619).

44531421 is a wasteful number, since it uses less digits than its factorization.

44531421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71056.

The product of its digits is 1920, while the sum is 24.

The square root of 44531421 is about 6673.1867200012. The cubic root of 44531421 is about 354.4504384498.

Adding to 44531421 its reverse (12413544), we get a palindrome (56944965).

The spelling of 44531421 in words is "forty-four million, five hundred thirty-one thousand, four hundred twenty-one".