55293565140 has 384 divisors, whose sum is σ = 198894528000. Its totient is φ = 12624998400.

The previous prime is 55293565139. The next prime is 55293565147. The reversal of 55293565140 is 4156539255.

55293565140 is a `hidden beast` number, since 5 + 529 + 35 + 6 + 51 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55293565147) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 7058746 + ... + 7066574.

It is an arithmetic number, because the mean of its divisors is an integer number (517954500).

Almost surely, 2^55293565140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55293565140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99447264000).

55293565140 is an abundant number, since it is smaller than the sum of its proper divisors (143600962860).

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

55293565140 is a wasteful number, since it uses less digits than its factorization.

55293565140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7928 (or 7920 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 55293565140 in words is "fifty-five billion, two hundred ninety-three million, five hundred sixty-five thousand, one hundred forty".