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52051212148 = 22131138858273
BaseRepresentation
bin110000011110011111…
…100111011101110100
311222100112112112201011
4300132133213131310
51323100102242043
635524554042004
73521610001045
oct603637473564
9158315475634
1052051212148
1120090609101
12a107a19304
134ba6a08120
14273ad1a8cc
1515499c159d
hexc1e7e7774

52051212148 has 24 divisors (see below), whose sum is σ = 98964637128. Its totient is φ = 23811035136.

The previous prime is 52051212133. The next prime is 52051212149. The reversal of 52051212148 is 84121215025.

It can be written as a sum of positive squares in 4 ways, for example, as 5745336804 + 46305875344 = 75798^2 + 215188^2 .

It is a super-2 number, since 2×520512121482 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52051212149) 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, 4423261 + ... + 4435012.

It is an arithmetic number, because the mean of its divisors is an integer number (4123526547).

Almost surely, 252051212148 is an apocalyptic number.

It is an amenable number.

52051212148 is a deficient number, since it is larger than the sum of its proper divisors (46913424980).

52051212148 is a wasteful number, since it uses less digits than its factorization.

52051212148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8858403 (or 8858401 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The spelling of 52051212148 in words is "fifty-two billion, fifty-one million, two hundred twelve thousand, one hundred forty-eight".

Divisors: 1 2 4 13 26 52 113 226 452 1469 2938 5876 8858273 17716546 35433092 115157549 230315098 460630196 1000984849 2001969698 4003939396 13012803037 26025606074 52051212148