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52189071 = 3111581487
BaseRepresentation
bin1100011100010…
…1011110001111
310122012110221120
43013011132033
5101330022241
65102332023
71202412504
oct307053617
9118173846
1052189071
1127506470
121558a013
13aa7390c
146d074ab
1548ad666
hex31c578f

52189071 has 8 divisors (see below), whose sum is σ = 75911424. Its totient is φ = 31629720.

The previous prime is 52189069. The next prime is 52189097. The reversal of 52189071 is 17098125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52189071 - 21 = 52189069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1581487 = 52189071 / (5 + 2 + 1 + 8 + 9 + 0 + 7 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52189021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790711 + ... + 790776.

It is an arithmetic number, because the mean of its divisors is an integer number (9488928).

Almost surely, 252189071 is an apocalyptic number.

52189071 is a deficient number, since it is larger than the sum of its proper divisors (23722353).

52189071 is a wasteful number, since it uses less digits than its factorization.

52189071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581501.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 52189071 is about 7224.2003709753. The cubic root of 52189071 is about 373.7029464669.

The spelling of 52189071 in words is "fifty-two million, one hundred eighty-nine thousand, seventy-one".

Divisors: 1 3 11 33 1581487 4744461 17396357 52189071