61105087 has 2 divisors, whose sum is σ = 61105088. Its totient is φ = 61105086.

The previous prime is 61105069. The next prime is 61105127. The reversal of 61105087 is 78050116.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61105087 - 2⁷ = 61104959 is a prime.

It is equal to p_3623842 and since 61105087 and 3623842 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61105027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30552543 + 30552544.

It is an arithmetic number, because the mean of its divisors is an integer number (30552544).

Almost surely, 2^61105087 is an apocalyptic number.

61105087 is a deficient number, since it is larger than the sum of its proper divisors (1).

61105087 is an equidigital number, since it uses as much as digits as its factorization.

61105087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 61105087 is about 7816.9742867685. The cubic root of 61105087 is about 393.8756403624.

The spelling of 61105087 in words is "sixty-one million, one hundred five thousand, eighty-seven".