40205051 has 16 divisors (see below), whose sum is σ = 44815680. Its totient is φ = 35896320.

The previous prime is 40205041. The next prime is 40205059. The reversal of 40205051 is 15050204.

It is not a de Polignac number, because 40205051 - 2¹⁰ = 40204027 is a prime.

It is a super-2 number, since 2×40205051² = 3232892251825202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40205059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25010 + ... + 26568.

It is an arithmetic number, because the mean of its divisors is an integer number (2800980).

Almost surely, 2^40205051 is an apocalyptic number.

40205051 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

40205051 is a deficient number, since it is larger than the sum of its proper divisors (4610629).

40205051 is a wasteful number, since it uses less digits than its factorization.

40205051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 40205051 is about 6340.7453031958. The cubic root of 40205051 is about 342.5785807229.

Adding to 40205051 its reverse (15050204), we get a palindrome (55255255).

The spelling of 40205051 in words is "forty million, two hundred five thousand, fifty-one".