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52513700 = 2252525137
BaseRepresentation
bin1100100001010…
…0101110100100
310122210222020212
43020110232210
5101420414300
65113314552
71205234111
oct310245644
9118728225
1052513700
1127708358
1215705a58
13ab585c5
146d8d908
154924935
hex3214ba4

52513700 has 18 divisors (see below), whose sum is σ = 113954946. Its totient is φ = 21005440.

The previous prime is 52513691. The next prime is 52513759. The reversal of 52513700 is 731525.

It can be written as a sum of positive squares in 3 ways, for example, as 16777216 + 35736484 = 4096^2 + 5978^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 262469 + ... + 262668.

Almost surely, 252513700 is an apocalyptic number.

52513700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

52513700 is an abundant number, since it is smaller than the sum of its proper divisors (61441246).

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

52513700 is a wasteful number, since it uses less digits than its factorization.

52513700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525151 (or 525144 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 52513700 is about 7246.6337012436. The cubic root of 52513700 is about 374.4761871795.

The spelling of 52513700 in words is "fifty-two million, five hundred thirteen thousand, seven hundred".

Divisors: 1 2 4 5 10 20 25 50 100 525137 1050274 2100548 2625685 5251370 10502740 13128425 26256850 52513700