Search a number
-
+
102203555 = 520440711
BaseRepresentation
bin1100001011110…
…00000010100011
321010022110220212
412011320002203
5202131003210
614050324335
72350500356
oct605700243
9233273825
10102203555
1152767053
122a2896ab
131823579c
14d80629d
158e8c805
hex61780a3

102203555 has 4 divisors (see below), whose sum is σ = 122644272. Its totient is φ = 81762840.

The previous prime is 102203551. The next prime is 102203567. The reversal of 102203555 is 555302201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 102203555 - 22 = 102203551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102203555.

It is not an unprimeable number, because it can be changed into a prime (102203551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10220351 + ... + 10220360.

It is an arithmetic number, because the mean of its divisors is an integer number (30661068).

Almost surely, 2102203555 is an apocalyptic number.

102203555 is a deficient number, since it is larger than the sum of its proper divisors (20440717).

102203555 is an equidigital number, since it uses as much as digits as its factorization.

102203555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20440716.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 102203555 is about 10109.5773897824. The cubic root of 102203555 is about 467.5434754196.

Adding to 102203555 its reverse (555302201), we get a palindrome (657505756).

The spelling of 102203555 in words is "one hundred two million, two hundred three thousand, five hundred fifty-five".

Divisors: 1 5 20440711 102203555