52145500 has 96 divisors (see below), whose sum is σ = 131040000. Its totient is φ = 17928000.

The previous prime is 52145461. The next prime is 52145521. The reversal of 52145500 is 554125.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104251 + ... + 104749.

It is an arithmetic number, because the mean of its divisors is an integer number (1365000).

Almost surely, 2^52145500 is an apocalyptic number.

52145500 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 52145500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65520000).

52145500 is an abundant number, since it is smaller than the sum of its proper divisors (78894500).

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

52145500 is a wasteful number, since it uses less digits than its factorization.

52145500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 52145500 is about 7221.1841134263. The cubic root of 52145500 is about 373.5989199332.

Adding to 52145500 its reverse (554125), we get a palindrome (52699625).

The spelling of 52145500 in words is "fifty-two million, one hundred forty-five thousand, five hundred".