55784450 has 24 divisors (see below), whose sum is σ = 104738832. Its totient is φ = 22103120.

The previous prime is 55784411. The next prime is 55784471. The reversal of 55784450 is 5448755.

It is a super-2 number, since 2×55784450² = 6223809723605000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137 + ... + 10563.

It is an arithmetic number, because the mean of its divisors is an integer number (4364118).

Almost surely, 2^55784450 is an apocalyptic number.

55784450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55784450 is a deficient number, since it is larger than the sum of its proper divisors (48954382).

55784450 is a wasteful number, since it uses less digits than its factorization.

55784450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10546 (or 10541 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 38.

The square root of 55784450 is about 7468.8988478892. The cubic root of 55784450 is about 382.0947335929.

The spelling of 55784450 in words is "fifty-five million, seven hundred eighty-four thousand, four hundred fifty".