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53408383 = 721089967
BaseRepresentation
bin1100101110111…
…1001001111111
310201111102112021
43023233021333
5102133032013
65144421011
71215651400
oct313571177
9121442467
1053408383
1128169566
1215a77767
13b0ac8c2
1471439a7
154a4ea8d
hex32ef27f

53408383 has 6 divisors (see below), whose sum is σ = 62128176. Its totient is φ = 45778572.

The previous prime is 53408371. The next prime is 53408419. The reversal of 53408383 is 38380435.

It is not a de Polignac number, because 53408383 - 25 = 53408351 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 (53409383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 544935 + ... + 545032.

It is an arithmetic number, because the mean of its divisors is an integer number (10354696).

Almost surely, 253408383 is an apocalyptic number.

53408383 is a deficient number, since it is larger than the sum of its proper divisors (8719793).

53408383 is a wasteful number, since it uses less digits than its factorization.

53408383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089981 (or 1089974 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 53408383 is about 7308.1039264641. The cubic root of 53408383 is about 376.5908899000.

The spelling of 53408383 in words is "fifty-three million, four hundred eight thousand, three hundred eighty-three".

Divisors: 1 7 49 1089967 7629769 53408383