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51401150231 = 411907657413
BaseRepresentation
bin101111110111101111…
…110100111100010111
311220200020022222101212
4233313233310330113
51320232143301411
635340253012035
73466524365564
oct576757647427
9156606288355
1051401150231
111a887677a52
129b6618401b
134b02131bc2
1426b886186b
15150c8b568b
hexbf7bf4f17

51401150231 has 8 divisors (see below), whose sum is σ = 52682528304. Its totient is φ = 50121090880.

The previous prime is 51401150161. The next prime is 51401150239. The reversal of 51401150231 is 13205110415.

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 51401150231 - 222 = 51396955927 is a prime.

It is a super-2 number, since 2×514011502312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51401150197 and 51401150206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51401150239) 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, 250520 + ... + 406893.

It is an arithmetic number, because the mean of its divisors is an integer number (6585316038).

Almost surely, 251401150231 is an apocalyptic number.

51401150231 is a deficient number, since it is larger than the sum of its proper divisors (1281378073).

51401150231 is a wasteful number, since it uses less digits than its factorization.

51401150231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659361.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 51401150231 its reverse (13205110415), we get a palindrome (64606260646).

The spelling of 51401150231 in words is "fifty-one billion, four hundred one million, one hundred fifty thousand, two hundred thirty-one".

Divisors: 1 41 1907 78187 657413 26953933 1253686591 51401150231