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71054211400 = 2352355271057
BaseRepresentation
bin100001000101100101…
…0010011100101001000
320210101220000221001021
41002023022103211020
52131004334231100
652350350202224
75063534555164
oct1021312234510
9223356027037
1071054211400
1128152282767
121192bab3374
136914985a93
143620a35ca4
151cace4ea1a
hex108b293948

71054211400 has 24 divisors (see below), whose sum is σ = 165201041970. Its totient is φ = 28421684480.

The previous prime is 71054211383. The next prime is 71054211407. The reversal of 71054211400 is 411245017.

It can be written as a sum of positive squares in 3 ways, for example, as 66916377124 + 4137834276 = 258682^2 + 64326^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (71054211407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177635329 + ... + 177635728.

Almost surely, 271054211400 is an apocalyptic number.

It is an amenable number.

71054211400 is an abundant number, since it is smaller than the sum of its proper divisors (94146830570).

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

71054211400 is a wasteful number, since it uses less digits than its factorization.

71054211400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355271073 (or 355271064 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 71054211400 its reverse (411245017), we get a palindrome (71465456417).

The spelling of 71054211400 in words is "seventy-one billion, fifty-four million, two hundred eleven thousand, four hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 200 355271057 710542114 1421084228 1776355285 2842168456 3552710570 7105421140 8881776425 14210842280 17763552850 35527105700 71054211400