55289429 has 8 divisors (see below), whose sum is σ = 59847480. Its totient is φ = 50774976.

The previous prime is 55289387. The next prime is 55289459. The reversal of 55289429 is 92498255.

It can be written as a sum of positive squares in 4 ways, for example, as 12974404 + 42315025 = 3602^2 + 6505^2 .

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 55289429 - 2⁸ = 55289173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55289429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55289459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8234 + ... + 13355.

It is an arithmetic number, because the mean of its divisors is an integer number (7480935).

Almost surely, 2^55289429 is an apocalyptic number.

It is an amenable number.

55289429 is a deficient number, since it is larger than the sum of its proper divisors (4558051).

55289429 is a wasteful number, since it uses less digits than its factorization.

55289429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21799.

The product of its digits is 259200, while the sum is 44.

The square root of 55289429 is about 7435.6861821892. The cubic root of 55289429 is about 380.9611610003.

The spelling of 55289429 in words is "fifty-five million, two hundred eighty-nine thousand, four hundred twenty-nine".