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57990799 = 125946061
BaseRepresentation
bin1101110100110…
…1111010001111
311001010020102101
43131031322033
5104321201144
65430535531
71302625246
oct335157217
9131106371
1057990799
112a809389
12175075a7
13c0255a9
1479b795d
1551576d4
hex374de8f

57990799 has 4 divisors (see below), whose sum is σ = 58038120. Its totient is φ = 57943480.

The previous prime is 57990761. The next prime is 57990817. The reversal of 57990799 is 99709975.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57990799 - 213 = 57982607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57990899) 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 3 ways as a sum of consecutive naturals, for example, 21772 + ... + 24289.

It is an arithmetic number, because the mean of its divisors is an integer number (14509530).

Almost surely, 257990799 is an apocalyptic number.

57990799 is a deficient number, since it is larger than the sum of its proper divisors (47321).

57990799 is a wasteful number, since it uses less digits than its factorization.

57990799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47320.

The product of its (nonzero) digits is 1607445, while the sum is 55.

The square root of 57990799 is about 7615.1690066603. The cubic root of 57990799 is about 387.0671940516.

It can be divided in two parts, 579 and 90799, that added together give a triangular number (91378 = T427).

The spelling of 57990799 in words is "fifty-seven million, nine hundred ninety thousand, seven hundred ninety-nine".

Divisors: 1 1259 46061 57990799