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52397469 = 331979851
BaseRepresentation
bin1100011111100…
…0010110011101
310122121001211000
43013320112131
5101403204334
65111020513
71204241205
oct307702635
9118531730
1052397469
1127638aa3
121566a739
13ab17727
146d5d405
154900299
hex31f859d

52397469 has 16 divisors (see below), whose sum is σ = 78027840. Its totient is φ = 34750800.

The previous prime is 52397447. The next prime is 52397479. The reversal of 52397469 is 96479325.

It is a happy number.

It is not a de Polignac number, because 52397469 - 25 = 52397437 is a prime.

It is a super-2 number, since 2×523974692 = 5490989515211922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52397479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394 + ... + 10244.

It is an arithmetic number, because the mean of its divisors is an integer number (4876740).

Almost surely, 252397469 is an apocalyptic number.

It is an amenable number.

52397469 is a deficient number, since it is larger than the sum of its proper divisors (25630371).

52397469 is a wasteful number, since it uses less digits than its factorization.

52397469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10057 (or 10051 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 52397469 is about 7238.6096040607. The cubic root of 52397469 is about 374.1997012735.

The spelling of 52397469 in words is "fifty-two million, three hundred ninety-seven thousand, four hundred sixty-nine".

Divisors: 1 3 9 27 197 591 1773 5319 9851 29553 88659 265977 1940647 5821941 17465823 52397469