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53008291 = 77572613
BaseRepresentation
bin1100101000110…
…1011110100011
310200202002201001
43022031132203
5102032231131
65132052431
71212364060
oct312153643
9120662631
1053008291
1127a15a06
1215904117
13ac9c76b
14707bc67
1549c1261
hex328d7a3

53008291 has 4 divisors (see below), whose sum is σ = 60580912. Its totient is φ = 45435672.

The previous prime is 53008283. The next prime is 53008297. The reversal of 53008291 is 19280035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19280035 = 53856007.

It is a cyclic number.

It is not a de Polignac number, because 53008291 - 23 = 53008283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53008297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3786300 + ... + 3786313.

It is an arithmetic number, because the mean of its divisors is an integer number (15145228).

Almost surely, 253008291 is an apocalyptic number.

53008291 is a deficient number, since it is larger than the sum of its proper divisors (7572621).

53008291 is an equidigital number, since it uses as much as digits as its factorization.

53008291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7572620.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 53008291 is about 7280.6792952306. The cubic root of 53008291 is about 375.6481614230.

The spelling of 53008291 in words is "fifty-three million, eight thousand, two hundred ninety-one".

Divisors: 1 7 7572613 53008291