53055552781 has 32 divisors (see below), whose sum is σ = 66580899840. Its totient is φ = 41071406400.

The previous prime is 53055552769. The next prime is 53055552799. The reversal of 53055552781 is 18725555035.

It is a cyclic number.

It is not a de Polignac number, because 53055552781 - 2⁷ = 53055552653 is a prime.

It is a super-2 number, since 2×53055552781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53055552731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26019360 + ... + 26021398.

It is an arithmetic number, because the mean of its divisors is an integer number (2080653120).

Almost surely, 2^53055552781 is an apocalyptic number.

It is an amenable number.

53055552781 is a deficient number, since it is larger than the sum of its proper divisors (13525347059).

53055552781 is a wasteful number, since it uses less digits than its factorization.

53055552781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105.

The product of its (nonzero) digits is 1050000, while the sum is 46.

The spelling of 53055552781 in words is "fifty-three billion, fifty-five million, five hundred fifty-two thousand, seven hundred eighty-one".