44566921 has 6 divisors (see below), whose sum is σ = 51843210. Its totient is φ = 38200176.

The previous prime is 44566919. The next prime is 44566927. The reversal of 44566921 is 12966544.

It can be written as a sum of positive squares in only one way, i.e., 41744521 + 2822400 = 6461^2 + 1680^2 .

It is not a de Polignac number, because 44566921 - 2¹ = 44566919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44566927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 454716 + ... + 454813.

It is an arithmetic number, because the mean of its divisors is an integer number (8640535).

Almost surely, 2^44566921 is an apocalyptic number.

It is an amenable number.

44566921 is a deficient number, since it is larger than the sum of its proper divisors (7276289).

44566921 is an equidigital number, since it uses as much as digits as its factorization.

44566921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909543 (or 909536 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 44566921 is about 6675.8460886992. The cubic root of 44566921 is about 354.5446015380.

The spelling of 44566921 in words is "forty-four million, five hundred sixty-six thousand, nine hundred twenty-one".