56105555 has 8 divisors (see below), whose sum is σ = 73447344. Its totient is φ = 40804000.

The previous prime is 56105551. The next prime is 56105573. The reversal of 56105555 is 55550165.

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

It is not a de Polignac number, because 56105555 - 2² = 56105551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56105551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509996 + ... + 510105.

It is an arithmetic number, because the mean of its divisors is an integer number (9180918).

Almost surely, 2^56105555 is an apocalyptic number.

56105555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56105555 is a deficient number, since it is larger than the sum of its proper divisors (17341789).

56105555 is a wasteful number, since it uses less digits than its factorization.

56105555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020117.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 56105555 is about 7490.3641433511. The cubic root of 56105555 is about 382.8264659794.

It can be divided in two parts, 561055 and 55, that multiplied together give a square (30858025 = 5555²).

The spelling of 56105555 in words is "fifty-six million, one hundred five thousand, five hundred fifty-five".