105515887 has 2 divisors, whose sum is σ = 105515888. Its totient is φ = 105515886.

The previous prime is 105515867. The next prime is 105515899. The reversal of 105515887 is 788515501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105515887 - 2²³ = 97127279 is a prime.

It is a super-2 number, since 2×105515887² = 22267204818793538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105515807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52757943 + 52757944.

It is an arithmetic number, because the mean of its divisors is an integer number (52757944).

Almost surely, 2^105515887 is an apocalyptic number.

105515887 is a deficient number, since it is larger than the sum of its proper divisors (1).

105515887 is an equidigital number, since it uses as much as digits as its factorization.

105515887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56000, while the sum is 40.

The square root of 105515887 is about 10272.0926300341. The cubic root of 105515887 is about 472.5407700699.

The spelling of 105515887 in words is "one hundred five million, five hundred fifteen thousand, eight hundred eighty-seven".