40106554 has 4 divisors (see below), whose sum is σ = 60159834. Its totient is φ = 20053276.

The previous prime is 40106543. The next prime is 40106579. The reversal of 40106554 is 45560104.

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

It can be written as a sum of positive squares in only one way, i.e., 40030929 + 75625 = 6327^2 + 275^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10026637 + ... + 10026640.

Almost surely, 2^40106554 is an apocalyptic number.

40106554 is a deficient number, since it is larger than the sum of its proper divisors (20053280).

40106554 is a wasteful number, since it uses less digits than its factorization.

40106554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20053279.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40106554 is about 6332.9735511843. The cubic root of 40106554 is about 342.2985947142.

Adding to 40106554 its reverse (45560104), we get a palindrome (85666658).

The spelling of 40106554 in words is "forty million, one hundred six thousand, five hundred fifty-four".