55229518 has 8 divisors (see below), whose sum is σ = 83216448. Its totient is φ = 27490704.

The previous prime is 55229513. The next prime is 55229519. The reversal of 55229518 is 81592255.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55229513) 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, 61471 + ... + 62362.

It is an arithmetic number, because the mean of its divisors is an integer number (10402056).

Almost surely, 2^55229518 is an apocalyptic number.

55229518 is a deficient number, since it is larger than the sum of its proper divisors (27986930).

55229518 is a wasteful number, since it uses less digits than its factorization.

55229518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124058.

The product of its digits is 36000, while the sum is 37.

The square root of 55229518 is about 7431.6564775291. The cubic root of 55229518 is about 380.8235095338.

The spelling of 55229518 in words is "fifty-five million, two hundred twenty-nine thousand, five hundred eighteen".