996342521 has 2 divisors, whose sum is σ = 996342522. Its totient is φ = 996342520.

The previous prime is 996342469. The next prime is 996342593. The reversal of 996342521 is 125243699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 980629225 + 15713296 = 31315^2 + 3964^2 .

It is a cyclic number.

It is not a de Polignac number, because 996342521 - 2¹⁰ = 996341497 is a prime.

It is not a weakly prime, because it can be changed into another prime (996342421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498171260 + 498171261.

It is an arithmetic number, because the mean of its divisors is an integer number (498171261).

Almost surely, 2^996342521 is an apocalyptic number.

It is an amenable number.

996342521 is a deficient number, since it is larger than the sum of its proper divisors (1).

996342521 is an equidigital number, since it uses as much as digits as its factorization.

996342521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 996342521 is about 31564.8938062525. The cubic root of 996342521 is about 998.7793509555.

Subtracting from 996342521 its sum of digits (41), we obtain a triangular number (996342480 = T₄₄₆₃₉).

The spelling of 996342521 in words is "nine hundred ninety-six million, three hundred forty-two thousand, five hundred twenty-one".