55033420 has 48 divisors (see below), whose sum is σ = 131791968. Its totient is φ = 19123200.

The previous prime is 55033409. The next prime is 55033441. The reversal of 55033420 is 2433055.

It is a junction number, because it is equal to n+sod(n) for n = 55033391 and 55033400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1806 + ... + 10645.

It is an arithmetic number, because the mean of its divisors is an integer number (2745666).

Almost surely, 2^55033420 is an apocalyptic number.

It is an amenable number.

55033420 is an abundant number, since it is smaller than the sum of its proper divisors (76758548).

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

55033420 is a wasteful number, since it uses less digits than its factorization.

55033420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12490 (or 12488 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 55033420 is about 7418.4513208621. The cubic root of 55033420 is about 380.3722575534.

Adding to 55033420 its reverse (2433055), we get a palindrome (57466475).

The spelling of 55033420 in words is "fifty-five million, thirty-three thousand, four hundred twenty".