61118287 has 2 divisors, whose sum is σ = 61118288. Its totient is φ = 61118286.

The previous prime is 61118263. The next prime is 61118311. The reversal of 61118287 is 78281116.

It is a balanced prime because it is at equal distance from previous prime (61118263) and next prime (61118311).

It is a cyclic number.

It is not a de Polignac number, because 61118287 - 2¹¹ = 61116239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61118257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30559143 + 30559144.

It is an arithmetic number, because the mean of its divisors is an integer number (30559144).

Almost surely, 2^61118287 is an apocalyptic number.

61118287 is a deficient number, since it is larger than the sum of its proper divisors (1).

61118287 is an equidigital number, since it uses as much as digits as its factorization.

61118287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 34.

The square root of 61118287 is about 7817.8185576285. The cubic root of 61118287 is about 393.9040001624.

The spelling of 61118287 in words is "sixty-one million, one hundred eighteen thousand, two hundred eighty-seven".