Search a number
-
+
64154561 is a prime number
BaseRepresentation
bin1111010010111…
…0101111000001
311110201101111212
43310232233001
5112410421221
610211015505
71406206352
oct364565701
9143641455
1064154561
11332392a9
121959a595
13103a2ca3
14873dd29
155973b5b
hex3d2ebc1

64154561 has 2 divisors, whose sum is σ = 64154562. Its totient is φ = 64154560.

The previous prime is 64154537. The next prime is 64154591. The reversal of 64154561 is 16545146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45144961 + 19009600 = 6719^2 + 4360^2 .

It is a cyclic number.

It is not a de Polignac number, because 64154561 - 218 = 63892417 is a prime.

It is not a weakly prime, because it can be changed into another prime (64154501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32077280 + 32077281.

It is an arithmetic number, because the mean of its divisors is an integer number (32077281).

Almost surely, 264154561 is an apocalyptic number.

It is an amenable number.

64154561 is a deficient number, since it is larger than the sum of its proper divisors (1).

64154561 is an equidigital number, since it uses as much as digits as its factorization.

64154561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The square root of 64154561 is about 8009.6542372315. The cubic root of 64154561 is about 400.3217432172.

The spelling of 64154561 in words is "sixty-four million, one hundred fifty-four thousand, five hundred sixty-one".