Search a number
-
+
1053284905 = 5210656981
BaseRepresentation
bin111110110001111…
…101101000101001
32201101221102021001
4332301331220221
54124120104110
6252303315001
735046526321
oct7661755051
92641842231
101053284905
114a06085a2
122548aba61
1313a2a580a
149dc5c281
156270963a
hex3ec7da29

1053284905 has 4 divisors (see below), whose sum is σ = 1263941892. Its totient is φ = 842627920.

The previous prime is 1053284891. The next prime is 1053284951. The reversal of 1053284905 is 5094823501.

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 292683664 + 760601241 = 17108^2 + 27579^2 .

It is not a de Polignac number, because 1053284905 - 25 = 1053284873 is a prime.

It is a super-2 number, since 2×10532849052 = 2218818182201718050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105328486 + ... + 105328495.

It is an arithmetic number, because the mean of its divisors is an integer number (315985473).

Almost surely, 21053284905 is an apocalyptic number.

It is an amenable number.

1053284905 is a deficient number, since it is larger than the sum of its proper divisors (210656987).

1053284905 is an equidigital number, since it uses as much as digits as its factorization.

1053284905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210656986.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1053284905 is about 32454.3510950381. The cubic root of 1053284905 is about 1017.4551789604.

The spelling of 1053284905 in words is "one billion, fifty-three million, two hundred eighty-four thousand, nine hundred five".

Divisors: 1 5 210656981 1053284905