Search a number
-
+
87230357 is a prime number
BaseRepresentation
bin1010011001100…
…00011110010101
320002010202112222
411030300132111
5134312332412
612353352125
72106305624
oct514603625
9202122488
1087230357
114526a505
1225268645
13150c23c6
14b8296bb
1579d1072
hex5330795

87230357 has 2 divisors, whose sum is σ = 87230358. Its totient is φ = 87230356.

The previous prime is 87230333. The next prime is 87230369. The reversal of 87230357 is 75303278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64866916 + 22363441 = 8054^2 + 4729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-87230357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87230317) 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 as a sum of consecutive naturals, namely, 43615178 + 43615179.

It is an arithmetic number, because the mean of its divisors is an integer number (43615179).

Almost surely, 287230357 is an apocalyptic number.

It is an amenable number.

87230357 is a deficient number, since it is larger than the sum of its proper divisors (1).

87230357 is an equidigital number, since it uses as much as digits as its factorization.

87230357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 87230357 is about 9339.7193212644. The cubic root of 87230357 is about 443.4954990568.

The spelling of 87230357 in words is "eighty-seven million, two hundred thirty thousand, three hundred fifty-seven".