40885281 has 6 divisors (see below), whose sum is σ = 59056530. Its totient is φ = 27256848.

The previous prime is 40885277. The next prime is 40885291. The reversal of 40885281 is 18258804.

It can be written as a sum of positive squares in only one way, i.e., 38192400 + 2692881 = 6180^2 + 1641^2 .

It is not a de Polignac number, because 40885281 - 2² = 40885277 is a prime.

It is a super-2 number, since 2×40885281² = 3343212404897922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40885291) 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, 2271396 + ... + 2271413.

It is an arithmetic number, because the mean of its divisors is an integer number (9842755).

Almost surely, 2^40885281 is an apocalyptic number.

It is an amenable number.

40885281 is a deficient number, since it is larger than the sum of its proper divisors (18171249).

40885281 is a wasteful number, since it uses less digits than its factorization.

40885281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542815 (or 4542812 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 40885281 is about 6394.1599135461. The cubic root of 40885281 is about 344.4998170854.

The spelling of 40885281 in words is "forty million, eight hundred eighty-five thousand, two hundred eighty-one".