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53000023 = 292636949
BaseRepresentation
bin1100101000101…
…1011101010111
310200201200100211
43022023131113
5102032000043
65131550251
71212331006
oct312133527
9120650324
1053000023
1127a0a77a
12158bb387
13ac98a7b
147078c3d
1549bda9d
hex328b757

53000023 has 8 divisors (see below), whose sum is σ = 55044000. Its totient is φ = 50970528.

The previous prime is 53000011. The next prime is 53000039. The reversal of 53000023 is 32000035.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-53000023 is a prime.

It is a super-3 number, since 3×530000233 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52999967 and 53000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53000723) 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, 4153 + ... + 11101.

It is an arithmetic number, because the mean of its divisors is an integer number (6880500).

Almost surely, 253000023 is an apocalyptic number.

53000023 is a deficient number, since it is larger than the sum of its proper divisors (2043977).

53000023 is a wasteful number, since it uses less digits than its factorization.

53000023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7241.

The product of its (nonzero) digits is 90, while the sum is 13.

The square root of 53000023 is about 7280.1114689268. Note that the first 3 decimals coincide. The cubic root of 53000023 is about 375.6286297583.

Adding to 53000023 its reverse (32000035), we get a palindrome (85000058).

The spelling of 53000023 in words is "fifty-three million, twenty-three", and thus it is an aban number and an uban number.

Divisors: 1 29 263 6949 7627 201521 1827587 53000023