53991854 has 8 divisors (see below), whose sum is σ = 92557488. Its totient is φ = 23139360.

The previous prime is 53991827. The next prime is 53991871. The reversal of 53991854 is 45819935.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1928267 + ... + 1928294.

It is an arithmetic number, because the mean of its divisors is an integer number (11569686).

Almost surely, 2^53991854 is an apocalyptic number.

53991854 is a deficient number, since it is larger than the sum of its proper divisors (38565634).

53991854 is a wasteful number, since it uses less digits than its factorization.

53991854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856570.

The product of its digits is 194400, while the sum is 44.

The square root of 53991854 is about 7347.9149423493. The cubic root of 53991854 is about 377.9573078703.

It can be divided in two parts, 53991 and 854, that added together give a palindrome (54845).

The spelling of 53991854 in words is "fifty-three million, nine hundred ninety-one thousand, eight hundred fifty-four".