55407 has 16 divisors (see below), whose sum is σ = 85248. Its totient is φ = 31680.

The previous prime is 55399. The next prime is 55411. The reversal of 55407 is 70455.

It is not a de Polignac number, because 55407 - 2³ = 55399 is a prime.

55407 is a modest number, since divided by 407 gives 55 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55457) 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, 723 + ... + 795.

It is an arithmetic number, because the mean of its divisors is an integer number (5328).

2⁵⁵⁴⁰⁷ is an apocalyptic number.

55407 is a deficient number, since it is larger than the sum of its proper divisors (29841).

55407 is a wasteful number, since it uses less digits than its factorization.

55407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110.

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 55407 is about 235.3869155242. The cubic root of 55407 is about 38.1231003264.

The spelling of 55407 in words is "fifty-five thousand, four hundred seven".