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53553012145 = 517630035437
BaseRepresentation
bin110001111000000000…
…100001110110110001
312010020012102220000021
4301320000201312301
51334134032342040
640334002523441
73604044043513
oct617000416661
9163205386007
1053553012145
1120791308726
12a466966581
135085baa789
14284056bbb3
1515d677424a
hexc78021db1

53553012145 has 8 divisors (see below), whose sum is σ = 68043827304. Its totient is φ = 40322267904.

The previous prime is 53553012133. The next prime is 53553012169. The reversal of 53553012145 is 54121035535.

It can be written as a sum of positive squares in 4 ways, for example, as 3785202576 + 49767809569 = 61524^2 + 223087^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53553012145 - 223 = 53544623537 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 53553012145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315017634 + ... + 315017803.

It is an arithmetic number, because the mean of its divisors is an integer number (8505478413).

Almost surely, 253553012145 is an apocalyptic number.

It is an amenable number.

53553012145 is a deficient number, since it is larger than the sum of its proper divisors (14490815159).

53553012145 is a wasteful number, since it uses less digits than its factorization.

53553012145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630035459.

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 53553012145 in words is "fifty-three billion, five hundred fifty-three million, twelve thousand, one hundred forty-five".

Divisors: 1 5 17 85 630035437 3150177185 10710602429 53553012145