105560551 has 4 divisors (see below), whose sum is σ = 109200600. Its totient is φ = 101920504.

The previous prime is 105560537. The next prime is 105560563. The reversal of 105560551 is 155065501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155065501 = 89 ⋅1742309.

It is a cyclic number.

It is not a de Polignac number, because 105560551 - 2⁷ = 105560423 is a prime.

It is a super-2 number, since 2×105560551² = 22286059854847202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105560051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1819981 + ... + 1820038.

It is an arithmetic number, because the mean of its divisors is an integer number (27300150).

Almost surely, 2^105560551 is an apocalyptic number.

105560551 is a deficient number, since it is larger than the sum of its proper divisors (3640049).

105560551 is an equidigital number, since it uses as much as digits as its factorization.

105560551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640048.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 105560551 is about 10274.2664458345. The cubic root of 105560551 is about 472.6074348611.

The spelling of 105560551 in words is "one hundred five million, five hundred sixty thousand, five hundred fifty-one".