Search a number
-
+
55497601 = 353157217
BaseRepresentation
bin1101001110110…
…1001110000001
310212102120101201
43103231032001
5103201410401
65301301201
71242502405
oct323551601
9125376351
1055497601
1129366195
1216704801
13b661823
147529105
154d13b01
hex34ed381

55497601 has 4 divisors (see below), whose sum is σ = 55655172. Its totient is φ = 55340032.

The previous prime is 55497587. The next prime is 55497661. The reversal of 55497601 is 10679455.

55497601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10679455 = 52135891.

It can be written as a sum of positive squares in 2 ways, for example, as 23280625 + 32216976 = 4825^2 + 5676^2 .

It is a cyclic number.

It is not a de Polignac number, because 55497601 - 25 = 55497569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55497661) 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, 78256 + ... + 78961.

It is an arithmetic number, because the mean of its divisors is an integer number (13913793).

Almost surely, 255497601 is an apocalyptic number.

It is an amenable number.

55497601 is a deficient number, since it is larger than the sum of its proper divisors (157571).

55497601 is a wasteful number, since it uses less digits than its factorization.

55497601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157570.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 55497601 is about 7449.6712007981. The cubic root of 55497601 is about 381.4386852099.

The spelling of 55497601 in words is "fifty-five million, four hundred ninety-seven thousand, six hundred one".

Divisors: 1 353 157217 55497601