55553320 has 32 divisors (see below), whose sum is σ = 125272800. Its totient is φ = 22171968.

The previous prime is 55553269. The next prime is 55553327. The reversal of 55553320 is 2335555.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55553327) 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, 20611 + ... + 23149.

It is an arithmetic number, because the mean of its divisors is an integer number (3914775).

Almost surely, 2^55553320 is an apocalyptic number.

It is an amenable number.

55553320 is an abundant number, since it is smaller than the sum of its proper divisors (69719480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55553320 is a wasteful number, since it uses less digits than its factorization.

55553320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3097 (or 3093 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 28.

The square root of 55553320 is about 7453.4099578649. The cubic root of 55553320 is about 381.5662959712.

Adding to 55553320 its reverse (2335555), we get a palindrome (57888875).

The spelling of 55553320 in words is "fifty-five million, five hundred fifty-three thousand, three hundred twenty".