2947997501 has 2 divisors, whose sum is σ = 2947997502. Its totient is φ = 2947997500.

The previous prime is 2947997491. The next prime is 2947997513. The reversal of 2947997501 is 1057997492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2132038276 + 815959225 = 46174^2 + 28565^2 .

It is a cyclic number.

It is not a de Polignac number, because 2947997501 - 2¹⁰ = 2947996477 is a prime.

It is a Sophie Germain 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 (2947997531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1473998750 + 1473998751.

It is an arithmetic number, because the mean of its divisors is an integer number (1473998751).

Almost surely, 2^2947997501 is an apocalyptic number.

It is an amenable number.

2947997501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2947997501 is an equidigital number, since it uses as much as digits as its factorization.

2947997501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1428840, while the sum is 53.

The square root of 2947997501 is about 54295.4648290260. The cubic root of 2947997501 is about 1433.8675523653.

The spelling of 2947997501 in words is "two billion, nine hundred forty-seven million, nine hundred ninety-seven thousand, five hundred one".