40153321 has 4 divisors (see below), whose sum is σ = 43242052. Its totient is φ = 37064592.

The previous prime is 40153297. The next prime is 40153343. The reversal of 40153321 is 12335104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1849600 + 38303721 = 1360^2 + 6189^2 .

It is a cyclic number.

It is not a de Polignac number, because 40153321 - 2¹⁹ = 39629033 is a prime.

It is a super-2 number, since 2×40153321² = 3224578374658082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40153721) 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, 1544346 + ... + 1544371.

It is an arithmetic number, because the mean of its divisors is an integer number (10810513).

Almost surely, 2^40153321 is an apocalyptic number.

It is an amenable number.

40153321 is a deficient number, since it is larger than the sum of its proper divisors (3088731).

40153321 is a wasteful number, since it uses less digits than its factorization.

40153321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088730.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 40153321 is about 6336.6648167628. The cubic root of 40153321 is about 342.4315909335.

Adding to 40153321 its reverse (12335104), we get a palindrome (52488425).

The spelling of 40153321 in words is "forty million, one hundred fifty-three thousand, three hundred twenty-one".