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71057101 = 157499907
BaseRepresentation
bin1000011110000…
…11111011001101
311221201002000111
410033003323031
5121142311401
611015000021
71521655363
oct417037315
9157632014
1071057101
1137123285
121b969011
131194ba2b
149619633
156388e51
hex43c3ecd

71057101 has 8 divisors (see below), whose sum is σ = 71732000. Its totient is φ = 70385328.

The previous prime is 71057099. The next prime is 71057123. The reversal of 71057101 is 10175017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71057101 - 21 = 71057099 is a prime.

It is a super-2 number, since 2×710571012 = 10098223205048402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71057191) 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, 77890 + ... + 78796.

It is an arithmetic number, because the mean of its divisors is an integer number (8966500).

Almost surely, 271057101 is an apocalyptic number.

It is an amenable number.

71057101 is a deficient number, since it is larger than the sum of its proper divisors (674899).

71057101 is a wasteful number, since it uses less digits than its factorization.

71057101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563.

The product of its (nonzero) digits is 245, while the sum is 22.

The square root of 71057101 is about 8429.5374131681. The cubic root of 71057101 is about 414.1927521613.

The spelling of 71057101 in words is "seventy-one million, fifty-seven thousand, one hundred one".

Divisors: 1 157 499 907 78343 142399 452593 71057101