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51055030001 = 254392006959
BaseRepresentation
bin101111100011000111…
…011110111011110001
311212210010001020201002
4233203013132323301
51314030041430001
635242050251345
73455122410653
oct574307367361
9155703036632
1051055030001
111a71a262778
129a8a286b55
134a78506931
1426848c46d3
1514dc2e646b
hexbe31deef1

51055030001 has 4 divisors (see below), whose sum is σ = 51057062400. Its totient is φ = 51052997604.

The previous prime is 51055029983. The next prime is 51055030021. The reversal of 51055030001 is 10003055015.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51055030001 - 214 = 51055013617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51055030021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978041 + ... + 1028918.

It is an arithmetic number, because the mean of its divisors is an integer number (12764265600).

Almost surely, 251055030001 is an apocalyptic number.

It is an amenable number.

51055030001 is a deficient number, since it is larger than the sum of its proper divisors (2032399).

51055030001 is a wasteful number, since it uses less digits than its factorization.

51055030001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032398.

The product of its (nonzero) digits is 375, while the sum is 20.

Adding to 51055030001 its reverse (10003055015), we get a palindrome (61058085016).

The spelling of 51055030001 in words is "fifty-one billion, fifty-five million, thirty thousand, one".

Divisors: 1 25439 2006959 51055030001