55318429 has 4 divisors (see below), whose sum is σ = 55402780. Its totient is φ = 55234080.

The previous prime is 55318423. The next prime is 55318433. The reversal of 55318429 is 92481355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45091225 + 10227204 = 6715^2 + 3198^2 .

It is a cyclic number.

It is not a de Polignac number, because 55318429 - 2¹¹ = 55316381 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 (55318423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41184 + ... + 42505.

It is an arithmetic number, because the mean of its divisors is an integer number (13850695).

Almost surely, 2^55318429 is an apocalyptic number.

It is an amenable number.

55318429 is a deficient number, since it is larger than the sum of its proper divisors (84351).

55318429 is an equidigital number, since it uses as much as digits as its factorization.

55318429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84350.

The product of its digits is 43200, while the sum is 37.

The square root of 55318429 is about 7437.6359819502. The cubic root of 55318429 is about 381.0277556631.

The spelling of 55318429 in words is "fifty-five million, three hundred eighteen thousand, four hundred twenty-nine".