538450961 has 2 divisors, whose sum is σ = 538450962. Its totient is φ = 538450960.

The previous prime is 538450951. The next prime is 538450981. The reversal of 538450961 is 169054835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490356736 + 48094225 = 22144^2 + 6935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538450961 is a prime.

It is not a weakly prime, because it can be changed into another prime (538450901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269225480 + 269225481.

It is an arithmetic number, because the mean of its divisors is an integer number (269225481).

Almost surely, 2^538450961 is an apocalyptic number.

It is an amenable number.

538450961 is a deficient number, since it is larger than the sum of its proper divisors (1).

538450961 is an equidigital number, since it uses as much as digits as its factorization.

538450961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 538450961 is about 23204.5461278604. The cubic root of 538450961 is about 813.5458839177.

The spelling of 538450961 in words is "five hundred thirty-eight million, four hundred fifty thousand, nine hundred sixty-one".