40773181 has 4 divisors (see below), whose sum is σ = 42545952. Its totient is φ = 39000412.

The previous prime is 40773179. The next prime is 40773203. The reversal of 40773181 is 18137704.

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 40773181 - 2¹ = 40773179 is a prime.

It is a super-2 number, since 2×40773181² = 3324904577717522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40773121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886351 + ... + 886396.

It is an arithmetic number, because the mean of its divisors is an integer number (10636488).

Almost surely, 2^40773181 is an apocalyptic number.

It is an amenable number.

40773181 is a deficient number, since it is larger than the sum of its proper divisors (1772771).

40773181 is a wasteful number, since it uses less digits than its factorization.

40773181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772770.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 40773181 is about 6385.3880853085. The cubic root of 40773181 is about 344.1846769559.

The spelling of 40773181 in words is "forty million, seven hundred seventy-three thousand, one hundred eighty-one".