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52115091 = 3710124571
BaseRepresentation
bin1100011011001…
…1011010010011
310122001201110120
43012303122103
5101320140331
65101001323
71201654020
oct306633223
9118051416
1052115091
1127465926
1215553243
13aa49042
146cc8547
154896796
hex31b3693

52115091 has 16 divisors (see below), whose sum is σ = 80203008. Its totient is φ = 29484000.

The previous prime is 52115087. The next prime is 52115111. The reversal of 52115091 is 19051125.

It is not a de Polignac number, because 52115091 - 22 = 52115087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52115191) 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, 10165 + ... + 14406.

It is an arithmetic number, because the mean of its divisors is an integer number (5012688).

Almost surely, 252115091 is an apocalyptic number.

52115091 is a deficient number, since it is larger than the sum of its proper divisors (28087917).

52115091 is a wasteful number, since it uses less digits than its factorization.

52115091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24682.

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 52115091 is about 7219.0782652635. The cubic root of 52115091 is about 373.5262835687.

The spelling of 52115091 in words is "fifty-two million, one hundred fifteen thousand, ninety-one".

Divisors: 1 3 7 21 101 303 707 2121 24571 73713 171997 515991 2481671 7445013 17371697 52115091