947506541 has 2 divisors, whose sum is σ = 947506542. Its totient is φ = 947506540.

The previous prime is 947506529. The next prime is 947506561. The reversal of 947506541 is 145605749.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 763361641 + 184144900 = 27629^2 + 13570^2 .

It is an emirp because it is prime and its reverse (145605749) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947506541 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947506561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473753270 + 473753271.

It is an arithmetic number, because the mean of its divisors is an integer number (473753271).

Almost surely, 2^947506541 is an apocalyptic number.

It is an amenable number.

947506541 is a deficient number, since it is larger than the sum of its proper divisors (1).

947506541 is an equidigital number, since it uses as much as digits as its factorization.

947506541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 947506541 is about 30781.5941919843. The cubic root of 947506541 is about 982.1867526707.

The spelling of 947506541 in words is "nine hundred forty-seven million, five hundred six thousand, five hundred forty-one".