55540429 has 8 divisors (see below), whose sum is σ = 63527040. Its totient is φ = 47566896.

The previous prime is 55540427. The next prime is 55540451. The reversal of 55540429 is 92404555.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55540429 - 2¹ = 55540427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55540394 and 55540403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55540427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8832 + ... + 13750.

It is an arithmetic number, because the mean of its divisors is an integer number (7940880).

Almost surely, 2^55540429 is an apocalyptic number.

It is an amenable number.

55540429 is a deficient number, since it is larger than the sum of its proper divisors (7986611).

55540429 is a wasteful number, since it uses less digits than its factorization.

55540429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 55540429 is about 7452.5451357238. The cubic root of 55540429 is about 381.5367798737.

The spelling of 55540429 in words is "fifty-five million, five hundred forty thousand, four hundred twenty-nine".