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55047970415 = 524150390821
BaseRepresentation
bin110011010001000111…
…010101111001101111
312021002101110122020002
4303101013111321233
51400214240023130
641142205014515
73656066012444
oct632107257157
9167071418202
1055047970415
1121389164a29
12a80355443b
135263825c79
142942d1b9cb
151672b24b45
hexcd11d5e6f

55047970415 has 16 divisors (see below), whose sum is σ = 66464266176. Its totient is φ = 43767974400.

The previous prime is 55047970409. The next prime is 55047970423. The reversal of 55047970415 is 51407974055.

It is not a de Polignac number, because 55047970415 - 24 = 55047970399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55047970415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560705 + ... + 651525.

It is an arithmetic number, because the mean of its divisors is an integer number (4154016636).

Almost surely, 255047970415 is an apocalyptic number.

55047970415 is a deficient number, since it is larger than the sum of its proper divisors (11416295761).

55047970415 is a wasteful number, since it uses less digits than its factorization.

55047970415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91570.

The product of its (nonzero) digits is 882000, while the sum is 47.

The spelling of 55047970415 in words is "fifty-five billion, forty-seven million, nine hundred seventy thousand, four hundred fifteen".

Divisors: 1 5 241 503 1205 2515 90821 121223 454105 606115 21887861 45682963 109439305 228414815 11009594083 55047970415