55730407 has 2 divisors, whose sum is σ = 55730408. Its totient is φ = 55730406.

The previous prime is 55730383. The next prime is 55730419. The reversal of 55730407 is 70403755.

55730407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55730407 - 2¹⁹ = 55206119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55730497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27865203 + 27865204.

It is an arithmetic number, because the mean of its divisors is an integer number (27865204).

Almost surely, 2^55730407 is an apocalyptic number.

55730407 is a deficient number, since it is larger than the sum of its proper divisors (1).

55730407 is an equidigital number, since it uses as much as digits as its factorization.

55730407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 55730407 is about 7465.2801019118. The cubic root of 55730407 is about 381.9713048262.

The spelling of 55730407 in words is "fifty-five million, seven hundred thirty thousand, four hundred seven".