40553231 has 8 divisors (see below), whose sum is σ = 40950000. Its totient is φ = 40158720.

The previous prime is 40553203. The next prime is 40553243. The reversal of 40553231 is 13235504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40553231 - 2⁶ = 40553167 is a prime.

It is a super-2 number, since 2×40553231² = 3289129089078722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40553197 and 40553206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40553131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81020 + ... + 81518.

It is an arithmetic number, because the mean of its divisors is an integer number (5118750).

Almost surely, 2^40553231 is an apocalyptic number.

40553231 is a deficient number, since it is larger than the sum of its proper divisors (396769).

40553231 is a wasteful number, since it uses less digits than its factorization.

40553231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 40553231 is about 6368.1418797009. The cubic root of 40553231 is about 343.5646619193.

Adding to 40553231 its reverse (13235504), we get a palindrome (53788735).

The spelling of 40553231 in words is "forty million, five hundred fifty-three thousand, two hundred thirty-one".