52145400 has 96 divisors (see below), whose sum is σ = 162779760. Its totient is φ = 13808640.

The previous prime is 52145389. The next prime is 52145407. The reversal of 52145400 is 454125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52145407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139614 + ... + 139986.

Almost surely, 2^52145400 is an apocalyptic number.

52145400 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 52145400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81389880).

52145400 is an abundant number, since it is smaller than the sum of its proper divisors (110634360).

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

52145400 is a wasteful number, since it uses less digits than its factorization.

52145400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 52145400 is about 7221.1771893508. The cubic root of 52145400 is about 373.5986811148.

Adding to 52145400 its reverse (454125), we get a palindrome (52599525).

The spelling of 52145400 in words is "fifty-two million, one hundred forty-five thousand, four hundred".