55143550530 has 24 divisors (see below), whose sum is σ = 143373231612. Its totient is φ = 14704946784.

The previous prime is 55143550463. The next prime is 55143550543. The reversal of 55143550530 is 3505534155.

55143550530 is a `hidden beast` number, since 5 + 5 + 143 + 5 + 505 + 3 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 49285332009 + 5858218521 = 222003^2 + 76539^2 .

It is a super-2 number, since 2×55143550530² (a number of 22 digits) contains 22 as substring.

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, 306352969 + ... + 306353148.

Almost surely, 2^55143550530 is an apocalyptic number.

55143550530 is an abundant number, since it is smaller than the sum of its proper divisors (88229681082).

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

55143550530 is a wasteful number, since it uses less digits than its factorization.

55143550530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612706130 (or 612706127 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 36.

The spelling of 55143550530 in words is "fifty-five billion, one hundred forty-three million, five hundred fifty thousand, five hundred thirty".