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52237689 = 3767137271
BaseRepresentation
bin1100011101000…
…1010101111001
310122021221122020
43013101111321
5101333101224
65103345053
71203004320
oct307212571
9118257566
1052237689
1127539a49
12155b2189
13aa8ca9a
146d1b0b7
1548bcc79
hex31d1579

52237689 has 32 divisors (see below), whose sum is σ = 81678336. Its totient is φ = 29082240.

The previous prime is 52237667. The next prime is 52237709. The reversal of 52237689 is 98673225.

It is not a de Polignac number, because 52237689 - 213 = 52229497 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 52237689.

It is not an unprimeable number, because it can be changed into a prime (52237609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192624 + ... + 192894.

It is an arithmetic number, because the mean of its divisors is an integer number (2552448).

Almost surely, 252237689 is an apocalyptic number.

It is an amenable number.

52237689 is a deficient number, since it is larger than the sum of its proper divisors (29440647).

52237689 is a wasteful number, since it uses less digits than its factorization.

52237689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485.

The product of its digits is 181440, while the sum is 42.

The square root of 52237689 is about 7227.5645275570. The cubic root of 52237689 is about 373.8189544778.

The spelling of 52237689 in words is "fifty-two million, two hundred thirty-seven thousand, six hundred eighty-nine".

Divisors: 1 3 7 21 67 137 201 271 411 469 813 959 1407 1897 2877 5691 9179 18157 27537 37127 54471 64253 111381 127099 192759 259889 381297 779667 2487509 7462527 17412563 52237689