55440029 has 4 divisors (see below), whose sum is σ = 56729376. Its totient is φ = 54150684.

The previous prime is 55440013. The next prime is 55440031. The reversal of 55440029 is 92004455.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55440029 - 2⁴ = 55440013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55439983 and 55440010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55440079) 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, 644609 + ... + 644694.

It is an arithmetic number, because the mean of its divisors is an integer number (14182344).

Almost surely, 2^55440029 is an apocalyptic number.

It is an amenable number.

55440029 is a deficient number, since it is larger than the sum of its proper divisors (1289347).

55440029 is a wasteful number, since it uses less digits than its factorization.

55440029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289346.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 55440029 is about 7445.8061349998. The cubic root of 55440029 is about 381.3067408517.

The spelling of 55440029 in words is "fifty-five million, four hundred forty thousand, twenty-nine".