52552533990 has 128 divisors (see below), whose sum is σ = 139400040960. Its totient is φ = 12573158400.

The previous prime is 52552533989. The next prime is 52552533991. The reversal of 52552533990 is 9933525525.

It is an interprime number because it is at equal distance from previous prime (52552533989) and next prime (52552533991).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52552533991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19412217 + ... + 19414923.

It is an arithmetic number, because the mean of its divisors is an integer number (1089062820).

Almost surely, 2^52552533990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52552533990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69700020480).

52552533990 is an abundant number, since it is smaller than the sum of its proper divisors (86847506970).

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

52552533990 is a wasteful number, since it uses less digits than its factorization.

52552533990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478.

The product of its (nonzero) digits is 1822500, while the sum is 48.

The spelling of 52552533990 in words is "fifty-two billion, five hundred fifty-two million, five hundred thirty-three thousand, nine hundred ninety".