55125518 has 8 divisors (see below), whose sum is σ = 94500912. Its totient is φ = 23625216.

The previous prime is 55125487. The next prime is 55125547. The reversal of 55125518 is 81552155.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1968755 + ... + 1968782.

It is an arithmetic number, because the mean of its divisors is an integer number (11812614).

Almost surely, 2^55125518 is an apocalyptic number.

55125518 is a deficient number, since it is larger than the sum of its proper divisors (39375394).

55125518 is a wasteful number, since it uses less digits than its factorization.

55125518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3937546.

The product of its digits is 10000, while the sum is 32.

The square root of 55125518 is about 7424.6560863113. The cubic root of 55125518 is about 380.5843226384.

The spelling of 55125518 in words is "fifty-five million, one hundred twenty-five thousand, five hundred eighteen".