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52145323141 = 71734441171
BaseRepresentation
bin110000100100000110…
…100111110010000101
311222121002121212201111
4300210012213302011
51323243200320031
635542155125021
73524131635112
oct604406476205
9158532555644
1052145323141
112012974808a
12a133443771
134bc03692c2
142749617909
151552db11b1
hexc241a7c85

52145323141 has 4 divisors (see below), whose sum is σ = 52879764384. Its totient is φ = 51410881900.

The previous prime is 52145323117. The next prime is 52145323151. The reversal of 52145323141 is 14132354125.

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 52145323141 - 221 = 52143225989 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 (52145323151) 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, 367220515 + ... + 367220656.

It is an arithmetic number, because the mean of its divisors is an integer number (13219941096).

Almost surely, 252145323141 is an apocalyptic number.

It is an amenable number.

52145323141 is a deficient number, since it is larger than the sum of its proper divisors (734441243).

52145323141 is an equidigital number, since it uses as much as digits as its factorization.

52145323141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734441242.

The product of its digits is 14400, while the sum is 31.

Adding to 52145323141 its reverse (14132354125), we get a palindrome (66277677266).

The spelling of 52145323141 in words is "fifty-two billion, one hundred forty-five million, three hundred twenty-three thousand, one hundred forty-one".

Divisors: 1 71 734441171 52145323141