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51152423 = 726715581
BaseRepresentation
bin1100001100100…
…0011000100111
310120020210221012
43003020120213
5101043334143
65024212435
71160534300
oct303103047
9116223835
1051152423
1126968633
121516a11b
13a79cb0a
146b177a7
154756418
hex30c8627

51152423 has 12 divisors (see below), whose sum is σ = 60395832. Its totient is φ = 43187760.

The previous prime is 51152401. The next prime is 51152443. The reversal of 51152423 is 32425115.

It is not a de Polignac number, because 51152423 - 220 = 50103847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51152443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4508 + ... + 11073.

It is an arithmetic number, because the mean of its divisors is an integer number (5032986).

Almost surely, 251152423 is an apocalyptic number.

51152423 is a deficient number, since it is larger than the sum of its proper divisors (9243409).

51152423 is a wasteful number, since it uses less digits than its factorization.

51152423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15662 (or 15655 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 51152423 is about 7152.0922113742. The cubic root of 51152423 is about 371.2120539237.

Adding to 51152423 its reverse (32425115), we get a palindrome (83577538).

The spelling of 51152423 in words is "fifty-one million, one hundred fifty-two thousand, four hundred twenty-three".

Divisors: 1 7 49 67 469 3283 15581 109067 763469 1043927 7307489 51152423