57961261 has 2 divisors, whose sum is σ = 57961262. Its totient is φ = 57961260.

The previous prime is 57961247. The next prime is 57961297. The reversal of 57961261 is 16216975.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48038761 + 9922500 = 6931^2 + 3150^2 .

It is a cyclic number.

It is not a de Polignac number, because 57961261 - 2¹⁷ = 57830189 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57961261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57961861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28980630 + 28980631.

It is an arithmetic number, because the mean of its divisors is an integer number (28980631).

Almost surely, 2^57961261 is an apocalyptic number.

57961261 is the 4396-th hex number.

It is an amenable number.

57961261 is a deficient number, since it is larger than the sum of its proper divisors (1).

57961261 is an equidigital number, since it uses as much as digits as its factorization.

57961261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 57961261 is about 7613.2293410878. The cubic root of 57961261 is about 387.0014644720.

The spelling of 57961261 in words is "fifty-seven million, nine hundred sixty-one thousand, two hundred sixty-one".