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51054331315 = 513267901781
BaseRepresentation
bin101111100011000100…
…110100010110110011
311212210001201202021211
4233203010310112303
51314024402100230
635242023300551
73455113440661
oct574304642663
9155701652254
1051054331315
111a719925849
129a89baa757
134a78320900
142684781c31
1514dc20942a
hexbe31345b3

51054331315 has 24 divisors (see below), whose sum is σ = 67330651248. Its totient is φ = 37138907520.

The previous prime is 51054331309. The next prime is 51054331327. The reversal of 51054331315 is 51313345015.

It is not a de Polignac number, because 51054331315 - 213 = 51054323123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 394276 + ... + 507505.

It is an arithmetic number, because the mean of its divisors is an integer number (2805443802).

Almost surely, 251054331315 is an apocalyptic number.

51054331315 is a deficient number, since it is larger than the sum of its proper divisors (16276319933).

51054331315 is a wasteful number, since it uses less digits than its factorization.

51054331315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901879 (or 901866 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The spelling of 51054331315 in words is "fifty-one billion, fifty-four million, three hundred thirty-one thousand, three hundred fifteen".

Divisors: 1 5 13 65 67 169 335 845 871 4355 11323 56615 901781 4508905 11723153 58615765 60419327 152400989 302096635 762004945 785451251 3927256255 10210866263 51054331315