55784371 has 12 divisors (see below), whose sum is σ = 58384872. Its totient is φ = 53293184.

The previous prime is 55784359. The next prime is 55784411. The reversal of 55784371 is 17348755.

It is not a de Polignac number, because 55784371 - 2⁷ = 55784243 is a prime.

It is a super-2 number, since 2×55784371² = 6223792095731282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55784321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94740 + ... + 95326.

It is an arithmetic number, because the mean of its divisors is an integer number (4865406).

Almost surely, 2^55784371 is an apocalyptic number.

55784371 is a deficient number, since it is larger than the sum of its proper divisors (2600501).

55784371 is a wasteful number, since it uses less digits than its factorization.

55784371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758 (or 729 counting only the distinct ones).

The product of its digits is 117600, while the sum is 40.

The square root of 55784371 is about 7468.8935592898. The cubic root of 55784371 is about 382.0945532230.

The spelling of 55784371 in words is "fifty-five million, seven hundred eighty-four thousand, three hundred seventy-one".