Search a number
-
+
2455555240 = 23561388881
BaseRepresentation
bin1001001001011100…
…1100110010101000
320100010120010112101
42102113030302220
520012110231430
61043355023144
7114564606115
oct22227146250
96303503471
102455555240
111050107aa6
1258643aab4
1330196a788
141941a190c
15e589bdca
hex925ccca8

2455555240 has 16 divisors (see below), whose sum is σ = 5524999380. Its totient is φ = 982222080.

The previous prime is 2455555217. The next prime is 2455555247. The reversal of 2455555240 is 425555542.

It can be written as a sum of positive squares in 2 ways, for example, as 2313802404 + 141752836 = 48102^2 + 11906^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2455555240.

It is not an unprimeable number, because it can be changed into a prime (2455555247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30694401 + ... + 30694480.

Almost surely, 22455555240 is an apocalyptic number.

2455555240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2455555240 is an abundant number, since it is smaller than the sum of its proper divisors (3069444140).

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

2455555240 is a wasteful number, since it uses less digits than its factorization.

2455555240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61388892 (or 61388888 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 37.

The square root of 2455555240 is about 49553.5593070770. The cubic root of 2455555240 is about 1349.1178947127.

The spelling of 2455555240 in words is "two billion, four hundred fifty-five million, five hundred fifty-five thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 20 40 61388881 122777762 245555524 306944405 491111048 613888810 1227777620 2455555240