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252752831 = 977258703
BaseRepresentation
bin11110001000010…
…11001110111111
3122121121011200222
433010023032333
51004201042311
641025211555
76156235502
oct1704131677
9577534628
10252752831
1111a743a41
1270790bbb
13404976b6
14257d5139
15172c9adb
hexf10b3bf

252752831 has 4 divisors (see below), whose sum is σ = 253012512. Its totient is φ = 252493152.

The previous prime is 252752771. The next prime is 252752849. The reversal of 252752831 is 138257252.

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

It is a cyclic number.

It is not a de Polignac number, because 252752831 - 26 = 252752767 is a prime.

It is a super-2 number, since 2×2527528312 = 127767987157029122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252752791 and 252752800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252752881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128375 + ... + 130328.

It is an arithmetic number, because the mean of its divisors is an integer number (63253128).

Almost surely, 2252752831 is an apocalyptic number.

252752831 is a deficient number, since it is larger than the sum of its proper divisors (259681).

252752831 is an equidigital number, since it uses as much as digits as its factorization.

252752831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259680.

The product of its digits is 33600, while the sum is 35.

The square root of 252752831 is about 15898.2021310587. The cubic root of 252752831 is about 632.2643227203.

The spelling of 252752831 in words is "two hundred fifty-two million, seven hundred fifty-two thousand, eight hundred thirty-one".

Divisors: 1 977 258703 252752831