4895591521 has 2 divisors, whose sum is σ = 4895591522. Its totient is φ = 4895591520.

The previous prime is 4895591501. The next prime is 4895591549. The reversal of 4895591521 is 1251955984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4505094400 + 390497121 = 67120^2 + 19761^2 .

It is a cyclic number.

It is not a de Polignac number, because 4895591521 - 2²³ = 4887202913 is a prime.

It is not a weakly prime, because it can be changed into another prime (4895591501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2447795760 + 2447795761.

It is an arithmetic number, because the mean of its divisors is an integer number (2447795761).

Almost surely, 2^4895591521 is an apocalyptic number.

It is an amenable number.

4895591521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4895591521 is an equidigital number, since it uses as much as digits as its factorization.

4895591521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 49.

The square root of 4895591521 is about 69968.5037784859. The cubic root of 4895591521 is about 1697.9897253729.

The spelling of 4895591521 in words is "four billion, eight hundred ninety-five million, five hundred ninety-one thousand, five hundred twenty-one".