55213261536 has 24 divisors (see below), whose sum is σ = 144934811784. Its totient is φ = 18404420480.

The previous prime is 55213261513. The next prime is 55213261561. The reversal of 55213261536 is 63516231255.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 55213261494 and 55213261503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287568975 + ... + 287569166.

It is an arithmetic number, because the mean of its divisors is an integer number (6038950491).

Almost surely, 2^55213261536 is an apocalyptic number.

It is an amenable number.

55213261536 is an abundant number, since it is smaller than the sum of its proper divisors (89721550248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55213261536 is a wasteful number, since it uses less digits than its factorization.

55213261536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575138154 (or 575138146 counting only the distinct ones).

The product of its digits is 162000, while the sum is 39.

The spelling of 55213261536 in words is "fifty-five billion, two hundred thirteen million, two hundred sixty-one thousand, five hundred thirty-six".