40953021 has 16 divisors (see below), whose sum is σ = 56454720. Its totient is φ = 26392320.

The previous prime is 40953007. The next prime is 40953049. The reversal of 40953021 is 12035904.

It is not a de Polignac number, because 40953021 - 2⁶ = 40952957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40952982 and 40953000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40953001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8901 + ... + 12693.

It is an arithmetic number, because the mean of its divisors is an integer number (3528420).

Almost surely, 2^40953021 is an apocalyptic number.

It is an amenable number.

40953021 is a deficient number, since it is larger than the sum of its proper divisors (15501699).

40953021 is a wasteful number, since it uses less digits than its factorization.

40953021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 40953021 is about 6399.4547423980. The cubic root of 40953021 is about 344.6899714289.

Adding to 40953021 its reverse (12035904), we get a palindrome (52988925).

The spelling of 40953021 in words is "forty million, nine hundred fifty-three thousand, twenty-one".