55406047 has 8 divisors (see below), whose sum is σ = 57264480. Its totient is φ = 53571840.

The previous prime is 55405993. The next prime is 55406081. The reversal of 55406047 is 74060455.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55406047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55406347) 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, 1347 + ... + 10612.

It is an arithmetic number, because the mean of its divisors is an integer number (7158060).

Almost surely, 2^55406047 is an apocalyptic number.

55406047 is a deficient number, since it is larger than the sum of its proper divisors (1858433).

55406047 is a wasteful number, since it uses less digits than its factorization.

55406047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12113.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 55406047 is about 7443.5238294775. The cubic root of 55406047 is about 381.2288175278.

The spelling of 55406047 in words is "fifty-five million, four hundred six thousand, forty-seven".