40553161 has 4 divisors (see below), whose sum is σ = 44239824. Its totient is φ = 36866500.

The previous prime is 40553137. The next prime is 40553167. The reversal of 40553161 is 16135504.

40553161 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 40553161 - 2⁵ = 40553129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40553167) 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, 1843315 + ... + 1843336.

It is an arithmetic number, because the mean of its divisors is an integer number (11059956).

Almost surely, 2^40553161 is an apocalyptic number.

It is an amenable number.

40553161 is a deficient number, since it is larger than the sum of its proper divisors (3686663).

40553161 is a wasteful number, since it uses less digits than its factorization.

40553161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686662.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 40553161 is about 6368.1363835898. The cubic root of 40553161 is about 343.5644642405.

Adding to 40553161 its reverse (16135504), we get a palindrome (56688665).

The spelling of 40553161 in words is "forty million, five hundred fifty-three thousand, one hundred sixty-one".