55784797 has 8 divisors (see below), whose sum is σ = 56673792. Its totient is φ = 54902400.

The previous prime is 55784791. The next prime is 55784809. The reversal of 55784797 is 79748755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55784797 - 2²³ = 47396189 is a prime.

It is a super-2 number, since 2×55784797² = 6223887152662418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55784791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17022 + ... + 20032.

It is an arithmetic number, because the mean of its divisors is an integer number (7084224).

Almost surely, 2^55784797 is an apocalyptic number.

It is an amenable number.

55784797 is a deficient number, since it is larger than the sum of its proper divisors (888995).

55784797 is a wasteful number, since it uses less digits than its factorization.

55784797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3299.

The product of its digits is 2469600, while the sum is 52.

The square root of 55784797 is about 7468.9220775156. The cubic root of 55784797 is about 382.0955258483.

The spelling of 55784797 in words is "fifty-five million, seven hundred eighty-four thousand, seven hundred ninety-seven".