55618450 has 12 divisors (see below), whose sum is σ = 103450410. Its totient is φ = 22247360.

The previous prime is 55618429. The next prime is 55618457. The reversal of 55618450 is 5481655.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 36687249 + 18931201 = 6057^2 + 4351^2 .

It is not an unprimeable number, because it can be changed into a prime (55618457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556135 + ... + 556234.

Almost surely, 2^55618450 is an apocalyptic number.

55618450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55618450 is a deficient number, since it is larger than the sum of its proper divisors (47831960).

55618450 is a wasteful number, since it uses less digits than its factorization.

55618450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112381 (or 1112376 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 55618450 is about 7457.7778191630. Note that the first 3 decimals coincide. The cubic root of 55618450 is about 381.7153522134.

The spelling of 55618450 in words is "fifty-five million, six hundred eighteen thousand, four hundred fifty".