61019087 has 2 divisors, whose sum is σ = 61019088. Its totient is φ = 61019086.

The previous prime is 61019081. The next prime is 61019099. The reversal of 61019087 is 78091016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61019087 - 2⁴ = 61019071 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 (61019081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30509543 + 30509544.

It is an arithmetic number, because the mean of its divisors is an integer number (30509544).

Almost surely, 2^61019087 is an apocalyptic number.

61019087 is a deficient number, since it is larger than the sum of its proper divisors (1).

61019087 is an equidigital number, since it uses as much as digits as its factorization.

61019087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 61019087 is about 7811.4715003001. The cubic root of 61019087 is about 393.6907719093.

The spelling of 61019087 in words is "sixty-one million, nineteen thousand, eighty-seven".