55203340 has 24 divisors (see below), whose sum is σ = 116523792. Its totient is φ = 21967680.

The previous prime is 55203329. The next prime is 55203359. The reversal of 55203340 is 4330255.

It is a super-4 number, since 4×55203340⁴ (a number of 32 digits) contains 4444 as substring.

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 7 ways as a sum of consecutive naturals, for example, 3066 + ... + 10945.

It is an arithmetic number, because the mean of its divisors is an integer number (4855158).

Almost surely, 2^55203340 is an apocalyptic number.

It is an amenable number.

55203340 is an abundant number, since it is smaller than the sum of its proper divisors (61320452).

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

55203340 is a wasteful number, since it uses less digits than its factorization.

55203340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14217 (or 14215 counting only the distinct ones).

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

The square root of 55203340 is about 7429.8950194468. The cubic root of 55203340 is about 380.7633317298.

Adding to 55203340 its reverse (4330255), we get a palindrome (59533595).

The spelling of 55203340 in words is "fifty-five million, two hundred three thousand, three hundred forty".