44761681 has 2 divisors, whose sum is σ = 44761682. Its totient is φ = 44761680.

The previous prime is 44761679. The next prime is 44761687. The reversal of 44761681 is 18616744.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41075281 + 3686400 = 6409^2 + 1920^2 .

It is a cyclic number.

It is not a de Polignac number, because 44761681 - 2¹ = 44761679 is a prime.

It is a super-2 number, since 2×44761681² = 4007216171891522, which contains 22 as substring.

Together with 44761679, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44761681.

It is not a weakly prime, because it can be changed into another prime (44761687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22380840 + 22380841.

It is an arithmetic number, because the mean of its divisors is an integer number (22380841).

Almost surely, 2^44761681 is an apocalyptic number.

It is an amenable number.

44761681 is a deficient number, since it is larger than the sum of its proper divisors (1).

44761681 is an equidigital number, since it uses as much as digits as its factorization.

44761681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 44761681 is about 6690.4171020946. The cubic root of 44761681 is about 355.0603111179.

It can be divided in two parts, 447 and 61681, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 44761681 in words is "forty-four million, seven hundred sixty-one thousand, six hundred eighty-one".