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52810897 = 137385481
BaseRepresentation
bin1100100101110…
…1010010010001
310200101001221011
43021131102101
5102004422042
65123530521
71210612426
oct311352221
9120331834
1052810897
11278a0677
1215829a41
13ac30969
147029d4d
154982a17
hex325d491

52810897 has 4 divisors (see below), whose sum is σ = 53196516. Its totient is φ = 52425280.

The previous prime is 52810873. The next prime is 52810957. The reversal of 52810897 is 79801825.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15062161 + 37748736 = 3881^2 + 6144^2 .

It is a cyclic number.

It is not a de Polignac number, because 52810897 - 211 = 52808849 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52810867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192604 + ... + 192877.

It is an arithmetic number, because the mean of its divisors is an integer number (13299129).

Almost surely, 252810897 is an apocalyptic number.

It is an amenable number.

52810897 is a deficient number, since it is larger than the sum of its proper divisors (385619).

52810897 is a wasteful number, since it uses less digits than its factorization.

52810897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385618.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 52810897 is about 7267.1106362845. The cubic root of 52810897 is about 375.1812978170.

The spelling of 52810897 in words is "fifty-two million, eight hundred ten thousand, eight hundred ninety-seven".

Divisors: 1 137 385481 52810897