40530051 has 20 divisors (see below), whose sum is σ = 62501824. Its totient is φ = 26146800.

The previous prime is 40530043. The next prime is 40530067. The reversal of 40530051 is 15003504.

It is not a de Polignac number, because 40530051 - 2³ = 40530043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40530011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5560 + ... + 10581.

Almost surely, 2^40530051 is an apocalyptic number.

40530051 is a deficient number, since it is larger than the sum of its proper divisors (21971773).

40530051 is a wasteful number, since it uses less digits than its factorization.

40530051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16184 (or 16175 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 40530051 is about 6366.3216224127. The cubic root of 40530051 is about 343.4991895635.

Adding to 40530051 its reverse (15003504), we get a palindrome (55533555).

The spelling of 40530051 in words is "forty million, five hundred thirty thousand, fifty-one".