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52491850321 = 197211632
BaseRepresentation
bin110000111000110000…
…100001001001010001
312000111020200021122111
4300320300201021101
51330000403202241
640040414305321
73535540236331
oct607060411121
9160436607574
1052491850321
1120297310089
12a20b4b8241
134c470a7881
14277d65d0c1
151573510c81
hexc38c21251

52491850321 has 9 divisors (see below), whose sum is σ = 52805063131. Its totient is φ = 52180488472.

The previous prime is 52491850291. The next prime is 52491850331. The reversal of 52491850321 is 12305819425.

It is a happy number.

The square root of 52491850321 is 229111.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 51431436225 + 1060414096 = 226785^2 + 32564^2 .

It is not a de Polignac number, because 52491850321 - 213 = 52491842129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52491850331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 45134286 + ... + 45135448.

Almost surely, 252491850321 is an apocalyptic number.

52491850321 is the 229111-st square number.

52491850321 is the 114556-th centered octagonal number.

It is an amenable number.

52491850321 is a deficient number, since it is larger than the sum of its proper divisors (313212810).

52491850321 is an frugal number, since it uses more digits than its factorization.

52491850321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 52491850321 in words is "fifty-two billion, four hundred ninety-one million, eight hundred fifty thousand, three hundred twenty-one".

Divisors: 1 197 1163 38809 229111 1352569 45134867 266456093 52491850321