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53146253 = 230923017
BaseRepresentation
bin1100101010111…
…1001010001101
310201000002221202
43022233022031
5102101140003
65135035245
71213510226
oct312571215
9121002852
1053146253
1127aaa626
121596bb25
13b01a4b4
1470b624d
1549ec088
hex32af28d

53146253 has 4 divisors (see below), whose sum is σ = 53171580. Its totient is φ = 53120928.

The previous prime is 53146243. The next prime is 53146259. The reversal of 53146253 is 35264135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35264135 = 57052827.

It can be written as a sum of positive squares in 2 ways, for example, as 36808489 + 16337764 = 6067^2 + 4042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-53146253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53146259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9200 + ... + 13817.

It is an arithmetic number, because the mean of its divisors is an integer number (13292895).

Almost surely, 253146253 is an apocalyptic number.

It is an amenable number.

53146253 is a deficient number, since it is larger than the sum of its proper divisors (25327).

53146253 is a wasteful number, since it uses less digits than its factorization.

53146253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25326.

The product of its digits is 10800, while the sum is 29.

The square root of 53146253 is about 7290.1476665428. The cubic root of 53146253 is about 375.9737725972.

The spelling of 53146253 in words is "fifty-three million, one hundred forty-six thousand, two hundred fifty-three".

Divisors: 1 2309 23017 53146253