61226287 has 2 divisors, whose sum is σ = 61226288. Its totient is φ = 61226286.

The previous prime is 61226273. The next prime is 61226311. The reversal of 61226287 is 78262216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61226287 - 2¹¹ = 61224239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61226237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30613143 + 30613144.

It is an arithmetic number, because the mean of its divisors is an integer number (30613144).

Almost surely, 2^61226287 is an apocalyptic number.

61226287 is a deficient number, since it is larger than the sum of its proper divisors (1).

61226287 is an equidigital number, since it uses as much as digits as its factorization.

61226287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 61226287 is about 7824.7228065919. The cubic root of 61226287 is about 394.1358816539.

The spelling of 61226287 in words is "sixty-one million, two hundred twenty-six thousand, two hundred eighty-seven".