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20150030553 = 310166501751
BaseRepresentation
bin10010110001000010…
…010001000011011001
31221000021211121110220
4102301002101003121
5312231401434203
613131245030253
71312223301522
oct226102210331
957007747426
1020150030553
118600192214
123aa4255389
131b917b7703
14d921bb849
157ce004653
hex4b10910d9

20150030553 has 8 divisors (see below), whose sum is σ = 27132714816. Its totient is φ = 13300350000.

The previous prime is 20150030533. The next prime is 20150030567. The reversal of 20150030553 is 35503005102.

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

It is not a de Polignac number, because 20150030553 - 29 = 20150030041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20150030533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33250573 + ... + 33251178.

It is an arithmetic number, because the mean of its divisors is an integer number (3391589352).

Almost surely, 220150030553 is an apocalyptic number.

It is an amenable number.

20150030553 is a deficient number, since it is larger than the sum of its proper divisors (6982684263).

20150030553 is a wasteful number, since it uses less digits than its factorization.

20150030553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66501855.

The product of its (nonzero) digits is 2250, while the sum is 24.

Adding to 20150030553 its reverse (35503005102), we get a palindrome (55653035655).

The spelling of 20150030553 in words is "twenty billion, one hundred fifty million, thirty thousand, five hundred fifty-three".

Divisors: 1 3 101 303 66501751 199505253 6716676851 20150030553