61230287 has 2 divisors, whose sum is σ = 61230288. Its totient is φ = 61230286.

The previous prime is 61230271. The next prime is 61230313. The reversal of 61230287 is 78203216.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61230287 - 2⁴ = 61230271 is a prime.

It is a super-4 number, since 4×61230287⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61230887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30615143 + 30615144.

It is an arithmetic number, because the mean of its divisors is an integer number (30615144).

Almost surely, 2^61230287 is an apocalyptic number.

61230287 is a deficient number, since it is larger than the sum of its proper divisors (1).

61230287 is an equidigital number, since it uses as much as digits as its factorization.

61230287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 61230287 is about 7824.9784025261. The cubic root of 61230287 is about 394.1444646186.

The spelling of 61230287 in words is "sixty-one million, two hundred thirty thousand, two hundred eighty-seven".