55786047 has 16 divisors (see below), whose sum is σ = 76927200. Its totient is φ = 35932032.

The previous prime is 55786021. The next prime is 55786067. The reversal of 55786047 is 74068755.

It is not a de Polignac number, because 55786047 - 2¹⁴ = 55769663 is a prime.

It is a super-2 number, since 2×55786047² = 6224166079772418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55786067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14853 + ... + 18225.

It is an arithmetic number, because the mean of its divisors is an integer number (4807950).

Almost surely, 2^55786047 is an apocalyptic number.

55786047 is a deficient number, since it is larger than the sum of its proper divisors (21141153).

55786047 is a wasteful number, since it uses less digits than its factorization.

55786047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562.

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 55786047 is about 7469.0057571272. The cubic root of 55786047 is about 382.0983797671.

The spelling of 55786047 in words is "fifty-five million, seven hundred eighty-six thousand, forty-seven".