40217051 has 4 divisors (see below), whose sum is σ = 45962352. Its totient is φ = 34471752.

The previous prime is 40217033. The next prime is 40217059. The reversal of 40217051 is 15071204.

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

It is not a de Polignac number, because 40217051 - 2⁶ = 40216987 is a prime.

It is a super-2 number, since 2×40217051² = 3234822382273202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40217059) 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, 2872640 + ... + 2872653.

It is an arithmetic number, because the mean of its divisors is an integer number (11490588).

Almost surely, 2^40217051 is an apocalyptic number.

40217051 is a deficient number, since it is larger than the sum of its proper divisors (5745301).

40217051 is an equidigital number, since it uses as much as digits as its factorization.

40217051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5745300.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 40217051 is about 6341.6914936001. The cubic root of 40217051 is about 342.6126604711.

Adding to 40217051 its reverse (15071204), we get a palindrome (55288255).

The spelling of 40217051 in words is "forty million, two hundred seventeen thousand, fifty-one".