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53078743 = 173122279
BaseRepresentation
bin1100101001111…
…0101011010111
310200212200100101
43022132223113
5102042004433
65133354531
71213106344
oct312365327
9120780311
1053078743
1127a63933
1215938a47
13acc5853
1470997cb
1549d707d
hex329ead7

53078743 has 4 divisors (see below), whose sum is σ = 56201040. Its totient is φ = 49956448.

The previous prime is 53078713. The next prime is 53078771. The reversal of 53078743 is 34787035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34787035 = 56957407.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-53078743 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 (53078713) 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, 1561123 + ... + 1561156.

It is an arithmetic number, because the mean of its divisors is an integer number (14050260).

Almost surely, 253078743 is an apocalyptic number.

53078743 is a deficient number, since it is larger than the sum of its proper divisors (3122297).

53078743 is a wasteful number, since it uses less digits than its factorization.

53078743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3122296.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 53078743 is about 7285.5159734915. The cubic root of 53078743 is about 375.8145092885.

The spelling of 53078743 in words is "fifty-three million, seventy-eight thousand, seven hundred forty-three".

Divisors: 1 17 3122279 53078743