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5115785237 = 89434913217
BaseRepresentation
bin1001100001110110…
…01011000000010101
3111012112020211001022
410300323023000111
540434120111422
62203345010525
7240526312523
oct46073130025
914175224038
105115785237
112195800192
12ba9323a45
13636b3b274
14367601313
151ee1c8342
hex130ecb015

5115785237 has 8 divisors (see below), whose sum is σ = 5174847000. Its totient is φ = 5056758784.

The previous prime is 5115785179. The next prime is 5115785263. The reversal of 5115785237 is 7325875115.

It can be written as a sum of positive squares in 4 ways, for example, as 97337956 + 5018447281 = 9866^2 + 70841^2 .

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 5115785237 - 216 = 5115719701 is a prime.

It is a super-2 number, since 2×51157852372 = 52342517182214292338, 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 (5115785287) 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, 380453 + ... + 393669.

It is an arithmetic number, because the mean of its divisors is an integer number (646855875).

Almost surely, 25115785237 is an apocalyptic number.

It is an amenable number.

5115785237 is a deficient number, since it is larger than the sum of its proper divisors (59061763).

5115785237 is a wasteful number, since it uses less digits than its factorization.

5115785237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17655.

The product of its digits is 294000, while the sum is 44.

The square root of 5115785237 is about 71524.7176645948. The cubic root of 5115785237 is about 1723.0746830455.

The spelling of 5115785237 in words is "five billion, one hundred fifteen million, seven hundred eighty-five thousand, two hundred thirty-seven".

Divisors: 1 89 4349 13217 387061 1176313 57480733 5115785237