55438958 has 4 divisors (see below), whose sum is σ = 83158440. Its totient is φ = 27719478.

The previous prime is 55438951. The next prime is 55438967. The reversal of 55438958 is 85983455.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55438951) 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 as a sum of consecutive naturals, namely, 13859738 + ... + 13859741.

It is an arithmetic number, because the mean of its divisors is an integer number (20789610).

Almost surely, 2^55438958 is an apocalyptic number.

55438958 is a deficient number, since it is larger than the sum of its proper divisors (27719482).

55438958 is a wasteful number, since it uses less digits than its factorization.

55438958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27719481.

The product of its digits is 864000, while the sum is 47.

The square root of 55438958 is about 7445.7342149717. The cubic root of 55438958 is about 381.3042854529.

The spelling of 55438958 in words is "fifty-five million, four hundred thirty-eight thousand, nine hundred fifty-eight".