84753121 has 2 divisors, whose sum is σ = 84753122. Its totient is φ = 84753120.

The previous prime is 84753103. The next prime is 84753127. The reversal of 84753121 is 12135748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43086096 + 41667025 = 6564^2 + 6455^2 .

It is a cyclic number.

It is not a de Polignac number, because 84753121 - 2¹³ = 84744929 is a prime.

It is not a weakly prime, because it can be changed into another prime (84753127) 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, 42376560 + 42376561.

It is an arithmetic number, because the mean of its divisors is an integer number (42376561).

Almost surely, 2^84753121 is an apocalyptic number.

It is an amenable number.

84753121 is a deficient number, since it is larger than the sum of its proper divisors (1).

84753121 is an equidigital number, since it uses as much as digits as its factorization.

84753121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 84753121 is about 9206.1458276523. The cubic root of 84753121 is about 439.2568740679.

Adding to 84753121 its reverse (12135748), we get a palindrome (96888869).

The spelling of 84753121 in words is "eighty-four million, seven hundred fifty-three thousand, one hundred twenty-one".