105551915 has 8 divisors (see below), whose sum is σ = 144756960. Its totient is φ = 72378432.

The previous prime is 105551881. The next prime is 105551923. The reversal of 105551915 is 519155501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105551915 - 2⁸ = 105551659 is a prime.

It is a super-2 number, since 2×105551915² = 22282413520334450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1507850 + ... + 1507919.

It is an arithmetic number, because the mean of its divisors is an integer number (18094620).

Almost surely, 2^105551915 is an apocalyptic number.

105551915 is a deficient number, since it is larger than the sum of its proper divisors (39205045).

105551915 is an equidigital number, since it uses as much as digits as its factorization.

105551915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015781.

The product of its (nonzero) digits is 5625, while the sum is 32.

The square root of 105551915 is about 10273.8461639252. The cubic root of 105551915 is about 472.5945463686.

The spelling of 105551915 in words is "one hundred five million, five hundred fifty-one thousand, nine hundred fifteen".