538642554 has 8 divisors (see below), whose sum is σ = 1077285120. Its totient is φ = 179547516.

The previous prime is 538642529. The next prime is 538642567. The reversal of 538642554 is 455246835.

It is a sphenic number, since it is the product of 3 distinct primes.

538642554 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 44886874 + ... + 44886885.

It is an arithmetic number, because the mean of its divisors is an integer number (134660640).

Almost surely, 2^538642554 is an apocalyptic number.

538642554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

538642554 is a wasteful number, since it uses less digits than its factorization.

538642554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89773764.

The product of its digits is 576000, while the sum is 42.

The square root of 538642554 is about 23208.6741112025. The cubic root of 538642554 is about 813.6423651352.

The spelling of 538642554 in words is "five hundred thirty-eight million, six hundred forty-two thousand, five hundred fifty-four".