55245578 has 8 divisors (see below), whose sum is σ = 87229920. Its totient is φ = 26168940.

The previous prime is 55245577. The next prime is 55245581. The reversal of 55245578 is 87554255.

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

It is not an unprimeable number, because it can be changed into a prime (55245577) 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, 726878 + ... + 726953.

It is an arithmetic number, because the mean of its divisors is an integer number (10903740).

Almost surely, 2^55245578 is an apocalyptic number.

55245578 is a deficient number, since it is larger than the sum of its proper divisors (31984342).

55245578 is a wasteful number, since it uses less digits than its factorization.

55245578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453852.

The product of its digits is 280000, while the sum is 41.

The square root of 55245578 is about 7432.7369117977. The cubic root of 55245578 is about 380.8604187390.

The spelling of 55245578 in words is "fifty-five million, two hundred forty-five thousand, five hundred seventy-eight".