53512053443550 has 144 divisors (see below), whose sum is σ = 162977061352560. Its totient is φ = 12478924177920.

The previous prime is 53512053443521. The next prime is 53512053443561. The reversal of 53512053443550 is 5534435021535.

53512053443550 is a `hidden beast` number, since 5 + 3 + 5 + 1 + 2 + 0 + 53 + 4 + 43 + 550 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 53512053443496 and 53512053443505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 240608839 + ... + 240831138.

Almost surely, 2^{53512053443550} is an apocalyptic number.

53512053443550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

53512053443550 is an abundant number, since it is smaller than the sum of its proper divisors (109465007909010).

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

53512053443550 is a wasteful number, since it uses less digits than its factorization.

53512053443550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481440027 (or 481440019 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 45.

The spelling of 53512053443550 in words is "fifty-three trillion, five hundred twelve billion, fifty-three million, four hundred forty-three thousand, five hundred fifty".