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52387245 = 3254912371
BaseRepresentation
bin1100011111010…
…1110110101101
310122120112210100
43013311312231
5101402342440
65110501313
71204166331
oct307656655
9118515710
1052387245
1127631349
1215664839
13ab12b91
146d597c1
1548ec230
hex31f5dad

52387245 has 24 divisors (see below), whose sum is σ = 91027872. Its totient is φ = 27871200.

The previous prime is 52387213. The next prime is 52387249. The reversal of 52387245 is 54278325.

It is not a de Polignac number, because 52387245 - 25 = 52387213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52387249) 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 23 ways as a sum of consecutive naturals, for example, 20910 + ... + 23280.

It is an arithmetic number, because the mean of its divisors is an integer number (3792828).

Almost surely, 252387245 is an apocalyptic number.

It is an amenable number.

52387245 is a deficient number, since it is larger than the sum of its proper divisors (38640627).

52387245 is a wasteful number, since it uses less digits than its factorization.

52387245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873 (or 2870 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 52387245 is about 7237.9033566358. The cubic root of 52387245 is about 374.1753612517.

The spelling of 52387245 in words is "fifty-two million, three hundred eighty-seven thousand, two hundred forty-five".

Divisors: 1 3 5 9 15 45 491 1473 2371 2455 4419 7113 7365 11855 21339 22095 35565 106695 1164161 3492483 5820805 10477449 17462415 52387245