55429913 has 16 divisors (see below), whose sum is σ = 70087680. Its totient is φ = 42579600.

The previous prime is 55429901. The next prime is 55429921. The reversal of 55429913 is 31992455.

It is not a de Polignac number, because 55429913 - 2⁸ = 55429657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55429963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398 + ... + 10536.

It is an arithmetic number, because the mean of its divisors is an integer number (4380480).

Almost surely, 2^55429913 is an apocalyptic number.

It is an amenable number.

55429913 is a deficient number, since it is larger than the sum of its proper divisors (14657767).

55429913 is a wasteful number, since it uses less digits than its factorization.

55429913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10228.

The product of its digits is 48600, while the sum is 38.

The square root of 55429913 is about 7445.1267954280. The cubic root of 55429913 is about 381.2835474197.

The spelling of 55429913 in words is "fifty-five million, four hundred twenty-nine thousand, nine hundred thirteen".