52081250 has 48 divisors (see below), whose sum is σ = 105321384. Its totient is φ = 19200000.

The previous prime is 52081231. The next prime is 52081273. The reversal of 52081250 is 5218025.

It can be written as a sum of positive squares in 12 ways, for example, as 22061809 + 30019441 = 4697^2 + 5479^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80930 + ... + 81570.

Almost surely, 2^52081250 is an apocalyptic number.

52081250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

52081250 is an abundant number, since it is smaller than the sum of its proper divisors (53240134).

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

52081250 is an equidigital number, since it uses as much as digits as its factorization.

52081250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 52081250 is about 7216.7340258596. The cubic root of 52081250 is about 373.4454161414.

Adding to 52081250 its reverse (5218025), we get a palindrome (57299275).

It can be divided in two parts, 520 and 81250, that multiplied together give a square (42250000 = 6500²).

The spelling of 52081250 in words is "fifty-two million, eighty-one thousand, two hundred fifty".