61125287 has 2 divisors, whose sum is σ = 61125288. Its totient is φ = 61125286.

The previous prime is 61125263. The next prime is 61125293. The reversal of 61125287 is 78252116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61125287 - 2¹² = 61121191 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61125187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30562643 + 30562644.

It is an arithmetic number, because the mean of its divisors is an integer number (30562644).

Almost surely, 2^61125287 is an apocalyptic number.

61125287 is a deficient number, since it is larger than the sum of its proper divisors (1).

61125287 is an equidigital number, since it uses as much as digits as its factorization.

61125287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 32.

The square root of 61125287 is about 7818.2662400305. The cubic root of 61125287 is about 393.9190377933.

The spelling of 61125287 in words is "sixty-one million, one hundred twenty-five thousand, two hundred eighty-seven".