55779384 has 32 divisors (see below), whose sum is σ = 139695120. Its totient is φ = 18560256.

The previous prime is 55779379. The next prime is 55779389. The reversal of 55779384 is 48397755.

It is an interprime number because it is at equal distance from previous prime (55779379) and next prime (55779389).

It is a super-2 number, since 2×55779384² = 6222679358838912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55779389) 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, 14532 + ... + 17964.

Almost surely, 2^55779384 is an apocalyptic number.

It is an amenable number.

55779384 is an abundant number, since it is smaller than the sum of its proper divisors (83915736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55779384 is a wasteful number, since it uses less digits than its factorization.

55779384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4119 (or 4115 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 48.

The square root of 55779384 is about 7468.5597005045. The cubic root of 55779384 is about 382.0831667463.

The spelling of 55779384 in words is "fifty-five million, seven hundred seventy-nine thousand, three hundred eighty-four".