55429145 has 8 divisors (see below), whose sum is σ = 68312904. Its totient is φ = 43144704.

The previous prime is 55429139. The next prime is 55429181. The reversal of 55429145 is 54192455.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25080064 + 30349081 = 5008^2 + 5509^2 .

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 55429145 - 2²⁴ = 38651929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149624 + ... + 149993.

It is an arithmetic number, because the mean of its divisors is an integer number (8539113).

Almost surely, 2^55429145 is an apocalyptic number.

It is an amenable number.

55429145 is a deficient number, since it is larger than the sum of its proper divisors (12883759).

55429145 is a wasteful number, since it uses less digits than its factorization.

55429145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299659.

The product of its digits is 36000, while the sum is 35.

The square root of 55429145 is about 7445.0752178873. The cubic root of 55429145 is about 381.2817864745.

The spelling of 55429145 in words is "fifty-five million, four hundred twenty-nine thousand, one hundred forty-five".