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2153012455 = 5111910120399
BaseRepresentation
bin1000000001010100…
…0101110011100111
312120001021100212001
42000111011303213
513402132344310
6553350310131
7104232206146
oct20025056347
95501240761
102153012455
11a05357140
12501058347
1328408c489
14165d2975d
15c903993a
hex80545ce7

2153012455 has 32 divisors (see below), whose sum is σ = 2996352000. Its totient is φ = 1468656000.

The previous prime is 2153012453. The next prime is 2153012467. The reversal of 2153012455 is 5542103512.

It is not a de Polignac number, because 2153012455 - 21 = 2153012453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153012453) 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, 95346 + ... + 115744.

It is an arithmetic number, because the mean of its divisors is an integer number (93636000).

Almost surely, 22153012455 is an apocalyptic number.

2153012455 is a deficient number, since it is larger than the sum of its proper divisors (843339545).

2153012455 is a wasteful number, since it uses less digits than its factorization.

2153012455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20535.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2153012455 is about 46400.5652444019. The cubic root of 2153012455 is about 1291.2653999532.

Adding to 2153012455 its reverse (5542103512), we get a palindrome (7695115967).

The spelling of 2153012455 in words is "two billion, one hundred fifty-three million, twelve thousand, four hundred fifty-five".

Divisors: 1 5 11 19 55 95 101 209 505 1045 1111 1919 5555 9595 20399 21109 101995 105545 224389 387581 1121945 1937905 2060299 4263391 10301495 21316955 22663289 39145681 113316445 195728405 430602491 2153012455