55690407 has 12 divisors (see below), whose sum is σ = 80653560. Its totient is φ = 37029168.

The previous prime is 55690373. The next prime is 55690447. The reversal of 55690407 is 70409655.

55690407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55690407 - 2¹⁵ = 55657639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55690447) 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 in 11 ways as a sum of consecutive naturals, for example, 4453 + ... + 11454.

It is an arithmetic number, because the mean of its divisors is an integer number (6721130).

Almost surely, 2^55690407 is an apocalyptic number.

55690407 is a deficient number, since it is larger than the sum of its proper divisors (24963153).

55690407 is a wasteful number, since it uses less digits than its factorization.

55690407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16302 (or 16299 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 55690407 is about 7462.6005520864. The cubic root of 55690407 is about 381.8798974606.

The spelling of 55690407 in words is "fifty-five million, six hundred ninety thousand, four hundred seven".