Search a number
-
+
197190553 = 7237310789
BaseRepresentation
bin10111100000011…
…10001110011001
3111202001022120211
423300032032121
5400440044203
631322251121
74613043400
oct1360161631
9452038524
10197190553
11a13441aa
1256056aa1
1331b12601
141c290637
15124a1c6d
hexbc0e399

197190553 has 12 divisors (see below), whose sum is σ = 230021220. Its totient is φ = 168551712.

The previous prime is 197190551. The next prime is 197190563. The reversal of 197190553 is 355091791.

197190553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 98247744 + 98942809 = 9912^2 + 9947^2 .

It is not a de Polignac number, because 197190553 - 21 = 197190551 is a prime.

It is a super-2 number, since 2×1971905532 = 77768228384891618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197190551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12883 + ... + 23671.

It is an arithmetic number, because the mean of its divisors is an integer number (19168435).

Almost surely, 2197190553 is an apocalyptic number.

It is an amenable number.

197190553 is a deficient number, since it is larger than the sum of its proper divisors (32830667).

197190553 is a wasteful number, since it uses less digits than its factorization.

197190553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11176 (or 11169 counting only the distinct ones).

The product of its (nonzero) digits is 42525, while the sum is 40.

The square root of 197190553 is about 14042.4553764646. The cubic root of 197190553 is about 582.0523338744.

The spelling of 197190553 in words is "one hundred ninety-seven million, one hundred ninety thousand, five hundred fifty-three".

Divisors: 1 7 49 373 2611 10789 18277 75523 528661 4024297 28170079 197190553