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50312725 = 5217311633
BaseRepresentation
bin1011111111101…
…1011000010101
310111200011002021
42333323120111
5100340001400
64554213141
71150436221
oct277733025
9114604067
1050312725
1126444771
1214a241b1
13a567858
146979781
15463c71a
hex2ffb615

50312725 has 12 divisors (see below), whose sum is σ = 62753796. Its totient is φ = 40014080.

The previous prime is 50312693. The next prime is 50312729. The reversal of 50312725 is 52721305.

It can be written as a sum of positive squares in 6 ways, for example, as 1787569 + 48525156 = 1337^2 + 6966^2 .

It is not a de Polignac number, because 50312725 - 25 = 50312693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50312725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50312729) 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 11 ways as a sum of consecutive naturals, for example, 1492 + ... + 10141.

It is an arithmetic number, because the mean of its divisors is an integer number (5229483).

Almost surely, 250312725 is an apocalyptic number.

It is an amenable number.

50312725 is a deficient number, since it is larger than the sum of its proper divisors (12441071).

50312725 is a wasteful number, since it uses less digits than its factorization.

50312725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11816 (or 11811 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 50312725 is about 7093.1463399538. The cubic root of 50312725 is about 369.1696132965.

The spelling of 50312725 in words is "fifty million, three hundred twelve thousand, seven hundred twenty-five".

Divisors: 1 5 25 173 865 4325 11633 58165 290825 2012509 10062545 50312725