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51024210245 = 512780353087
BaseRepresentation
bin101111100001010001…
…111010100101000101
311212200222001102221122
4233201101322211011
51313444144211440
635235025523325
73454266426311
oct574121724505
9155628042848
1051024210245
111a7039223a8
129a7baa3545
134a720057a8
142680780b41
1514d97597b5
hexbe147a945

51024210245 has 8 divisors (see below), whose sum is σ = 61711171584. Its totient is φ = 40497955344.

The previous prime is 51024210199. The next prime is 51024210247. The reversal of 51024210245 is 54201242015.

51024210245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-51024210245 is a prime.

It is a super-2 number, since 2×510242102452 (a number of 22 digits) 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 (51024210247) 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, 40175909 + ... + 40177178.

It is an arithmetic number, because the mean of its divisors is an integer number (7713896448).

Almost surely, 251024210245 is an apocalyptic number.

It is an amenable number.

51024210245 is a deficient number, since it is larger than the sum of its proper divisors (10686961339).

51024210245 is a wasteful number, since it uses less digits than its factorization.

51024210245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80353219.

The product of its (nonzero) digits is 3200, while the sum is 26.

The spelling of 51024210245 in words is "fifty-one billion, twenty-four million, two hundred ten thousand, two hundred forty-five".

Divisors: 1 5 127 635 80353087 401765435 10204842049 51024210245