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55500000037 = 371500000001
BaseRepresentation
bin110011101100000011…
…101100101100100101
312022020220001010021221
4303230003230230211
51402131000000122
641255113340341
74003225134166
oct635403545445
9168226033257
1055500000037
11215a0337529
12a90aa076b1
135306383711
142986d8776d
15169c6646c7
hexcec0ecb25

55500000037 has 4 divisors (see below), whose sum is σ = 57000000076. Its totient is φ = 54000000000.

The previous prime is 55499999969. The next prime is 55500000043. The reversal of 55500000037 is 73000000555.

It is a happy number.

55500000037 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21052268836 + 34447731201 = 145094^2 + 185601^2 .

It is a cyclic number.

It is not a de Polignac number, because 55500000037 - 219 = 55499475749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55499999957 and 55500000020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55509000037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749999964 + ... + 750000037.

It is an arithmetic number, because the mean of its divisors is an integer number (14250000019).

Almost surely, 255500000037 is an apocalyptic number.

It is an amenable number.

55500000037 is a deficient number, since it is larger than the sum of its proper divisors (1500000039).

55500000037 is a wasteful number, since it uses less digits than its factorization.

55500000037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500000038.

The product of its (nonzero) digits is 2625, while the sum is 25.

The spelling of 55500000037 in words is "fifty-five billion, five hundred million, thirty-seven", and thus it is an aban number.

Divisors: 1 37 1500000001 55500000037