55406807 has 2 divisors, whose sum is σ = 55406808. Its totient is φ = 55406806.

The previous prime is 55406801. The next prime is 55406837. The reversal of 55406807 is 70860455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55406807 - 2²² = 51212503 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55406801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27703403 + 27703404.

It is an arithmetic number, because the mean of its divisors is an integer number (27703404).

Almost surely, 2^55406807 is an apocalyptic number.

55406807 is a deficient number, since it is larger than the sum of its proper divisors (1).

55406807 is an equidigital number, since it uses as much as digits as its factorization.

55406807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 55406807 is about 7443.5748803918. The cubic root of 55406807 is about 381.2305606141.

The spelling of 55406807 in words is "fifty-five million, four hundred six thousand, eight hundred seven".