Search a number
-
+
1555045040 = 24519438063
BaseRepresentation
bin101110010110000…
…0001101010110000
311000101002110202202
41130230001222300
511141042420130
6414150002332
753351444003
oct13454015260
94011073682
101555045040
1172886739a
123749463a8
131ba225ac3
1410a75153a
15917be145
hex5cb01ab0

1555045040 has 20 divisors (see below), whose sum is σ = 3615479904. Its totient is φ = 622017984.

The previous prime is 1555045013. The next prime is 1555045043. The reversal of 1555045040 is 405405551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1555044994 and 1555045012.

It is not an unprimeable number, because it can be changed into a prime (1555045043) 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 3 ways as a sum of consecutive naturals, for example, 9718952 + ... + 9719111.

Almost surely, 21555045040 is an apocalyptic number.

1555045040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1555045040 is an abundant number, since it is smaller than the sum of its proper divisors (2060434864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1555045040 is a wasteful number, since it uses less digits than its factorization.

1555045040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19438076 (or 19438070 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 1555045040 is about 39434.0593903291. The cubic root of 1555045040 is about 1158.5487797355.

The spelling of 1555045040 in words is "one billion, five hundred fifty-five million, forty-five thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 19438063 38876126 77752252 97190315 155504504 194380630 311009008 388761260 777522520 1555045040