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55513310125 = 537132375407
BaseRepresentation
bin110011101100110110…
…011110001110101101
312022021211002100022011
4303230312132032231
51402142401411000
641300310521221
74003446231130
oct635466361655
9168254070264
1055513310125
11215a78a85a9
12a913366211
135309063b00
142988a50217
15169d8e32ba
hexcecd9e3ad

55513310125 has 48 divisors (see below), whose sum is σ = 85737180672. Its totient is φ = 35138001600.

The previous prime is 55513310123. The next prime is 55513310141. The reversal of 55513310125 is 52101331555.

It is not a de Polignac number, because 55513310125 - 21 = 55513310123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55513310123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39829 + ... + 335578.

It is an arithmetic number, because the mean of its divisors is an integer number (1786191264).

Almost surely, 255513310125 is an apocalyptic number.

It is an amenable number.

55513310125 is a deficient number, since it is larger than the sum of its proper divisors (30223870547).

55513310125 is a wasteful number, since it uses less digits than its factorization.

55513310125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375455 (or 375432 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 31.

The spelling of 55513310125 in words is "fifty-five billion, five hundred thirteen million, three hundred ten thousand, one hundred twenty-five".

Divisors: 1 5 7 13 25 35 65 91 125 169 175 325 455 845 875 1183 1625 2275 4225 5915 11375 21125 29575 147875 375407 1877035 2627849 4880291 9385175 13139245 24401455 34162037 46925875 63443783 65696225 122007275 170810185 317218915 328481125 444106481 610036375 854050925 1586094575 2220532405 4270254625 7930472875 11102662025 55513310125