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55312015460 = 22513788326987
BaseRepresentation
bin110011100000110110…
…100110000001100100
312021202210022111221012
4303200312212001210
51401234333443320
641224320241352
73665453242202
oct634066460144
9167683274835
1055312015460
1121504210979
12a877a70258
1352a6445440
14296a012072
15168add04c5
hexce0da6064

55312015460 has 48 divisors (see below), whose sum is σ = 125110754496. Its totient is φ = 20419550592.

The previous prime is 55312015459. The next prime is 55312015481. The reversal of 55312015460 is 6451021355.

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, 2036087 + ... + 2063073.

It is an arithmetic number, because the mean of its divisors is an integer number (2606474052).

Almost surely, 255312015460 is an apocalyptic number.

It is an amenable number.

55312015460 is an abundant number, since it is smaller than the sum of its proper divisors (69798739036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55312015460 is a wasteful number, since it uses less digits than its factorization.

55312015460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34892 (or 34890 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 55312015460 in words is "fifty-five billion, three hundred twelve million, fifteen thousand, four hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 7883 15766 26987 31532 39415 53974 78830 102479 107948 134935 157660 204958 269870 350831 409916 512395 539740 701662 1024790 1403324 1754155 2049580 3508310 7016620 212738521 425477042 850954084 1063692605 2127385210 2765600773 4254770420 5531201546 11062403092 13828003865 27656007730 55312015460