61298261 has 2 divisors, whose sum is σ = 61298262. Its totient is φ = 61298260.

The previous prime is 61298249. The next prime is 61298273. The reversal of 61298261 is 16289216.

It is a balanced prime because it is at equal distance from previous prime (61298249) and next prime (61298273).

It can be written as a sum of positive squares in only one way, i.e., 60357361 + 940900 = 7769^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 61298261 - 2¹⁴ = 61281877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61298561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30649130 + 30649131.

It is an arithmetic number, because the mean of its divisors is an integer number (30649131).

Almost surely, 2^61298261 is an apocalyptic number.

It is an amenable number.

61298261 is a deficient number, since it is larger than the sum of its proper divisors (1).

61298261 is an equidigital number, since it uses as much as digits as its factorization.

61298261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 61298261 is about 7829.3205963225. The cubic root of 61298261 is about 394.2902621161.

The spelling of 61298261 in words is "sixty-one million, two hundred ninety-eight thousand, two hundred sixty-one".