40751161 has 4 divisors (see below), whose sum is σ = 44455824. Its totient is φ = 37046500.

The previous prime is 40751149. The next prime is 40751197. The reversal of 40751161 is 16115704.

It is a happy number.

40751161 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 a cyclic number.

It is not a de Polignac number, because 40751161 - 2⁵ = 40751129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40751461) 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, 1852315 + ... + 1852336.

It is an arithmetic number, because the mean of its divisors is an integer number (11113956).

Almost surely, 2^40751161 is an apocalyptic number.

It is an amenable number.

40751161 is a deficient number, since it is larger than the sum of its proper divisors (3704663).

40751161 is a wasteful number, since it uses less digits than its factorization.

40751161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704662.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 40751161 is about 6383.6636032924. The cubic root of 40751161 is about 344.1227055719.

Adding to 40751161 its reverse (16115704), we get a palindrome (56866865).

The spelling of 40751161 in words is "forty million, seven hundred fifty-one thousand, one hundred sixty-one".