53721854 has 24 divisors (see below), whose sum is σ = 87389208. Its totient is φ = 24747120.

The previous prime is 53721851. The next prime is 53721901. The reversal of 53721854 is 45812735.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53721851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25709 + ... + 27719.

It is an arithmetic number, because the mean of its divisors is an integer number (3641217).

Almost surely, 2^53721854 is an apocalyptic number.

53721854 is a deficient number, since it is larger than the sum of its proper divisors (33667354).

53721854 is a wasteful number, since it uses less digits than its factorization.

53721854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088 (or 2069 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 53721854 is about 7329.5193566836. The cubic root of 53721854 is about 377.3262308579.

The spelling of 53721854 in words is "fifty-three million, seven hundred twenty-one thousand, eight hundred fifty-four".