55618546 has 4 divisors (see below), whose sum is σ = 83427822. Its totient is φ = 27809272.

The previous prime is 55618513. The next prime is 55618561. The reversal of 55618546 is 64581655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64581655 = 5 ⋅12916331.

It can be written as a sum of positive squares in only one way, i.e., 45765225 + 9853321 = 6765^2 + 3139^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 55618499 and 55618508.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13904635 + ... + 13904638.

Almost surely, 2^55618546 is an apocalyptic number.

55618546 is a deficient number, since it is larger than the sum of its proper divisors (27809276).

55618546 is a wasteful number, since it uses less digits than its factorization.

55618546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27809275.

The product of its digits is 144000, while the sum is 40.

The square root of 55618546 is about 7457.7842553938. The cubic root of 55618546 is about 381.7155718326.

The spelling of 55618546 in words is "fifty-five million, six hundred eighteen thousand, five hundred forty-six".