55033550 has 96 divisors (see below), whose sum is σ = 123742080. Its totient is φ = 17942400.

The previous prime is 55033547. The next prime is 55033567. The reversal of 55033550 is 5533055.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 307361 + ... + 307539.

It is an arithmetic number, because the mean of its divisors is an integer number (1288980).

Almost surely, 2^55033550 is an apocalyptic number.

55033550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55033550 is an abundant number, since it is smaller than the sum of its proper divisors (68708530).

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

55033550 is a wasteful number, since it uses less digits than its factorization.

55033550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 26.

The square root of 55033550 is about 7418.4600827935. The cubic root of 55033550 is about 380.3725570584.

The spelling of 55033550 in words is "fifty-five million, thirty-three thousand, five hundred fifty".