44521965 has 12 divisors (see below), whose sum is σ = 77171484. Its totient is φ = 23745024.

The previous prime is 44521957. The next prime is 44521973. The reversal of 44521965 is 56912544.

44521965 is a `hidden beast` number, since 44 + 521 + 96 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (44521957) and next prime (44521973).

It can be written as a sum of positive squares in 2 ways, for example, as 24621444 + 19900521 = 4962^2 + 4461^2 .

It is not a de Polignac number, because 44521965 - 2³ = 44521957 is a prime.

It is a super-2 number, since 2×44521965² = 3964410734922450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 494644 + ... + 494733.

It is an arithmetic number, because the mean of its divisors is an integer number (6430957).

Almost surely, 2^44521965 is an apocalyptic number.

44521965 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

44521965 is a deficient number, since it is larger than the sum of its proper divisors (32649519).

44521965 is a wasteful number, since it uses less digits than its factorization.

44521965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989388 (or 989385 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 44521965 is about 6672.4781753109. The cubic root of 44521965 is about 354.4253481463.

The spelling of 44521965 in words is "forty-four million, five hundred twenty-one thousand, nine hundred sixty-five".