40000554 has 40 divisors (see below), whose sum is σ = 97783488. Its totient is φ = 12120840.

The previous prime is 40000549. The next prime is 40000561. The reversal of 40000554 is 45500004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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, 9442 + ... + 13005.

Almost surely, 2^40000554 is an apocalyptic number.

40000554 is an abundant number, since it is smaller than the sum of its proper divisors (57782934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40000554 is a wasteful number, since it uses less digits than its factorization.

40000554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22472 (or 22463 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 40000554 is about 6324.5991177307. The cubic root of 40000554 is about 341.9967682058.

Adding to 40000554 its reverse (45500004), we get a palindrome (85500558).

The spelling of 40000554 in words is "forty million, five hundred fifty-four", and thus it is an aban number.