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54512015213 = 211457565319
BaseRepresentation
bin110010110001001010…
…110101011101101101
312012201000222021220102
4302301022311131231
51343120033441323
641013101400445
73636600325025
oct626112653555
9165630867812
1054512015213
112113367a947
12a693b69125
1351a9792406
1428d1a86a85
151640a58328
hexcb12b576d

54512015213 has 8 divisors (see below), whose sum is σ = 54890310720. Its totient is φ = 54134851680.

The previous prime is 54512015153. The next prime is 54512015231. The reversal of 54512015213 is 31251021545.

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 54512015213 - 28 = 54512014957 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 (54512015263) 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, 186233 + ... + 379086.

It is an arithmetic number, because the mean of its divisors is an integer number (6861288840).

Almost surely, 254512015213 is an apocalyptic number.

It is an amenable number.

54512015213 is a deficient number, since it is larger than the sum of its proper divisors (378295507).

54512015213 is a wasteful number, since it uses less digits than its factorization.

54512015213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565987.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 54512015213 its reverse (31251021545), we get a palindrome (85763036758).

The spelling of 54512015213 in words is "fifty-four billion, five hundred twelve million, fifteen thousand, two hundred thirteen".

Divisors: 1 211 457 96427 565319 119282309 258350783 54512015213