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53221222280 = 2357118739867
BaseRepresentation
bin110001100100001110…
…110110011110001000
312002101002010012212202
4301210032312132020
51332444113103110
640241031255332
73562604632232
oct614416663610
9162332105782
1053221222280
1120630aa1026
12a39381a548
13503222c105
14280c481252
1515b75860a5
hexc643b6788

53221222280 has 32 divisors (see below), whose sum is σ = 121434344640. Its totient is φ = 20988649920.

The previous prime is 53221222277. The next prime is 53221222283. The reversal of 53221222280 is 8222212235.

It is an interprime number because it is at equal distance from previous prime (53221222277) and next prime (53221222283).

It is not an unprimeable number, because it can be changed into a prime (53221222283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9367094 + ... + 9372773.

It is an arithmetic number, because the mean of its divisors is an integer number (3794823270).

Almost surely, 253221222280 is an apocalyptic number.

It is an amenable number.

53221222280 is an abundant number, since it is smaller than the sum of its proper divisors (68213122360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53221222280 is a wasteful number, since it uses less digits than its factorization.

53221222280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18739949 (or 18739945 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The spelling of 53221222280 in words is "fifty-three billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 71 142 284 355 568 710 1420 2840 18739867 37479734 74959468 93699335 149918936 187398670 374797340 749594680 1330530557 2661061114 5322122228 6652652785 10644244456 13305305570 26610611140 53221222280