55861018 has 8 divisors (see below), whose sum is σ = 86680980. Its totient is φ = 26967360.

The previous prime is 55860991. The next prime is 55861021. The reversal of 55861018 is 81016855.

It can be written as a sum of positive squares in 2 ways, for example, as 55308969 + 552049 = 7437^2 + 743^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481503 + ... + 481618.

Almost surely, 2^55861018 is an apocalyptic number.

55861018 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

55861018 is a deficient number, since it is larger than the sum of its proper divisors (30819962).

55861018 is a wasteful number, since it uses less digits than its factorization.

55861018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963152.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 55861018 is about 7474.0228792799. The cubic root of 55861018 is about 382.2694707844.

The spelling of 55861018 in words is "fifty-five million, eight hundred sixty-one thousand, eighteen".