40252881 has 4 divisors (see below), whose sum is σ = 53670512. Its totient is φ = 26835252.

The previous prime is 40252873. The next prime is 40252897. The reversal of 40252881 is 18825204.

40252881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40252881 - 2³ = 40252873 is a prime.

It is a super-2 number, since 2×40252881² = 3240588857600322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40252801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6708811 + ... + 6708816.

It is an arithmetic number, because the mean of its divisors is an integer number (13417628).

Almost surely, 2^40252881 is an apocalyptic number.

It is an amenable number.

40252881 is a deficient number, since it is larger than the sum of its proper divisors (13417631).

40252881 is a wasteful number, since it uses less digits than its factorization.

40252881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13417630.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 40252881 is about 6344.5158207699. The cubic root of 40252881 is about 342.7143765969.

The spelling of 40252881 in words is "forty million, two hundred fifty-two thousand, eight hundred eighty-one".