4921261 has 2 divisors, whose sum is σ = 4921262. Its totient is φ = 4921260.

The previous prime is 4921253. The next prime is 4921283. The reversal of 4921261 is 1621294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3587236 + 1334025 = 1894^2 + 1155^2 .

It is a cyclic number.

It is not a de Polignac number, because 4921261 - 2³ = 4921253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4921201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2460630 + 2460631.

It is an arithmetic number, because the mean of its divisors is an integer number (2460631).

Almost surely, 2^4921261 is an apocalyptic number.

It is an amenable number.

4921261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4921261 is an equidigital number, since it uses as much as digits as its factorization.

4921261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 25.

The square root of 4921261 is about 2218.3915344231. The cubic root of 4921261 is about 170.0952292289.

The spelling of 4921261 in words is "four million, nine hundred twenty-one thousand, two hundred sixty-one".