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53386837 = 77626691
BaseRepresentation
bin1100101110100…
…1111001010101
310201110022222021
43023221321111
5102131334322
65144133141
71215531520
oct313517125
9121408867
1053386837
1128154359
1215a671b1
13b0a2b5a
147139bb7
154a484c7
hex32e9e55

53386837 has 4 divisors (see below), whose sum is σ = 61013536. Its totient is φ = 45760140.

The previous prime is 53386831. The next prime is 53386859. The reversal of 53386837 is 73868335.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53386837 - 23 = 53386829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53386793 and 53386802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53386831) 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, 3813339 + ... + 3813352.

It is an arithmetic number, because the mean of its divisors is an integer number (15253384).

Almost surely, 253386837 is an apocalyptic number.

It is an amenable number.

53386837 is a deficient number, since it is larger than the sum of its proper divisors (7626699).

53386837 is an equidigital number, since it uses as much as digits as its factorization.

53386837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7626698.

The product of its digits is 362880, while the sum is 43.

The square root of 53386837 is about 7306.6296607944. The cubic root of 53386837 is about 376.5402416795.

The spelling of 53386837 in words is "fifty-three million, three hundred eighty-six thousand, eight hundred thirty-seven".

Divisors: 1 7 7626691 53386837