52721055 has 12 divisors (see below), whose sum is σ = 91383240. Its totient is φ = 28117872.

The previous prime is 52721047. The next prime is 52721069. The reversal of 52721055 is 55012725.

It is a happy number.

52721055 is an esthetic number in base 13, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 52721055 - 2³ = 52721047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 585745 + ... + 585834.

It is an arithmetic number, because the mean of its divisors is an integer number (7615270).

Almost surely, 2^52721055 is an apocalyptic number.

52721055 is a deficient number, since it is larger than the sum of its proper divisors (38662185).

52721055 is a wasteful number, since it uses less digits than its factorization.

52721055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171590 (or 1171587 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 52721055 is about 7260.9265937620. The cubic root of 52721055 is about 374.9684240080.

The spelling of 52721055 in words is "fifty-two million, seven hundred twenty-one thousand, fifty-five".