4921006261 has 2 divisors, whose sum is σ = 4921006262. Its totient is φ = 4921006260.

The previous prime is 4921006241. The next prime is 4921006313. The reversal of 4921006261 is 1626001294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3103604100 + 1817402161 = 55710^2 + 42631^2 .

It is a cyclic number.

It is not a de Polignac number, because 4921006261 - 2⁵ = 4921006229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4921006241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2460503130 + 2460503131.

It is an arithmetic number, because the mean of its divisors is an integer number (2460503131).

Almost surely, 2^4921006261 is an apocalyptic number.

It is an amenable number.

4921006261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4921006261 is an equidigital number, since it uses as much as digits as its factorization.

4921006261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 4921006261 is about 70149.8842550720. The cubic root of 4921006261 is about 1700.9229430118.

The spelling of 4921006261 in words is "four billion, nine hundred twenty-one million, six thousand, two hundred sixty-one".