52491500 has 48 divisors (see below), whose sum is σ = 115358880. Its totient is φ = 20865600.

The previous prime is 52491473. The next prime is 52491503. The reversal of 52491500 is 519425.

52491500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 52491500.

It is not an unprimeable number, because it can be changed into a prime (52491503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138311 + ... + 138689.

It is an arithmetic number, because the mean of its divisors is an integer number (2403310).

Almost surely, 2^52491500 is an apocalyptic number.

52491500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52491500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57679440).

52491500 is an abundant number, since it is smaller than the sum of its proper divisors (62867380).

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

52491500 is a wasteful number, since it uses less digits than its factorization.

52491500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 52491500 is about 7245.1017936258. The cubic root of 52491500 is about 374.4234102019.

The spelling of 52491500 in words is "fifty-two million, four hundred ninety-one thousand, five hundred".