55618946 has 16 divisors (see below), whose sum is σ = 86244480. Its totient is φ = 26886480.

The previous prime is 55618943. The next prime is 55618949. The reversal of 55618946 is 64981655.

It is an interprime number because it is at equal distance from previous prime (55618943) and next prime (55618949).

It is a junction number, because it is equal to n+sod(n) for n = 55618897 and 55618906.

It is not an unprimeable number, because it can be changed into a prime (55618943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3335 + ... + 11061.

It is an arithmetic number, because the mean of its divisors is an integer number (5390280).

Almost surely, 2^55618946 is an apocalyptic number.

55618946 is a deficient number, since it is larger than the sum of its proper divisors (30625534).

55618946 is a wasteful number, since it uses less digits than its factorization.

55618946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7849.

The product of its digits is 259200, while the sum is 44.

The square root of 55618946 is about 7457.8110729624. The cubic root of 55618946 is about 381.7164869103.

The spelling of 55618946 in words is "fifty-five million, six hundred eighteen thousand, nine hundred forty-six".