52506550440 has 48 divisors (see below), whose sum is σ = 170646290100. Its totient is φ = 14001746688.

The previous prime is 52506550429. The next prime is 52506550451. The reversal of 52506550440 is 4405560525.

52506550440 is a `hidden beast` number, since 5 + 2 + 50 + 65 + 504 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (52506550429) and next prime (52506550451).

It can be written as a sum of positive squares in 2 ways, for example, as 49228071876 + 3278478564 = 221874^2 + 57258^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52506550395 and 52506550404.

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, 72925405 + ... + 72926124.

Almost surely, 2^52506550440 is an apocalyptic number.

It is an amenable number.

52506550440 is an abundant number, since it is smaller than the sum of its proper divisors (118139739660).

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

52506550440 is a wasteful number, since it uses less digits than its factorization.

52506550440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145851546 (or 145851539 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 52506550440 in words is "fifty-two billion, five hundred six million, five hundred fifty thousand, four hundred forty".