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550800987 = 31123739941
BaseRepresentation
bin100000110101001…
…000111001011011
31102101102120220120
4200311020321123
52112001112422
6130353324323
716435505532
oct4065107133
91371376816
10550800987
11262a04a30
121345666a3
138a160c59
145321b319
153355045c
hex20d48e5b

550800987 has 32 divisors (see below), whose sum is σ = 847535616. Its totient is φ = 314899200.

The previous prime is 550800977. The next prime is 550800989. The reversal of 550800987 is 789008055.

It is not a de Polignac number, because 550800987 - 26 = 550800923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550800989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50437 + ... + 60377.

It is an arithmetic number, because the mean of its divisors is an integer number (26485488).

Almost surely, 2550800987 is an apocalyptic number.

550800987 is a deficient number, since it is larger than the sum of its proper divisors (296734629).

550800987 is a wasteful number, since it uses less digits than its factorization.

550800987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10051.

The product of its (nonzero) digits is 100800, while the sum is 42.

The square root of 550800987 is about 23469.1496863436. The cubic root of 550800987 is about 819.7188144565.

The spelling of 550800987 in words is "five hundred fifty million, eight hundred thousand, nine hundred eighty-seven".

Divisors: 1 3 11 23 33 69 73 219 253 759 803 1679 2409 5037 9941 18469 29823 55407 109351 228643 328053 685929 725693 2177079 2515073 7545219 7982623 16690939 23947869 50072817 183600329 550800987