40552313 has 4 divisors (see below), whose sum is σ = 40714128. Its totient is φ = 40390500.

The previous prime is 40552307. The next prime is 40552331. The reversal of 40552313 is 31325504.

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 40552313 - 2⁴ = 40552297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40552613) 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, 80531 + ... + 81032.

It is an arithmetic number, because the mean of its divisors is an integer number (10178532).

Almost surely, 2^40552313 is an apocalyptic number.

It is an amenable number.

40552313 is a deficient number, since it is larger than the sum of its proper divisors (161815).

40552313 is a wasteful number, since it uses less digits than its factorization.

40552313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161814.

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

The square root of 40552313 is about 6368.0698017531. The cubic root of 40552313 is about 343.5620694852.

Adding to 40552313 its reverse (31325504), we get a palindrome (71877817).

The spelling of 40552313 in words is "forty million, five hundred fifty-two thousand, three hundred thirteen".