55387898 has 4 divisors (see below), whose sum is σ = 83081850. Its totient is φ = 27693948.

The previous prime is 55387897. The next prime is 55387901. The reversal of 55387898 is 89878355.

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., 47018449 + 8369449 = 6857^2 + 2893^2 .

It is not an unprimeable number, because it can be changed into a prime (55387897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13846973 + ... + 13846976.

Almost surely, 2^55387898 is an apocalyptic number.

55387898 is a deficient number, since it is larger than the sum of its proper divisors (27693952).

55387898 is a wasteful number, since it uses less digits than its factorization.

55387898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27693951.

The product of its digits is 2419200, while the sum is 53.

The square root of 55387898 is about 7442.3046161791. The cubic root of 55387898 is about 381.1871874303.

The spelling of 55387898 in words is "fifty-five million, three hundred eighty-seven thousand, eight hundred ninety-eight".