55723340 has 24 divisors (see below), whose sum is σ = 117164880. Its totient is φ = 22261568.

The previous prime is 55723303. The next prime is 55723397. The reversal of 55723340 is 4332755.

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, 24074 + ... + 26286.

It is an arithmetic number, because the mean of its divisors is an integer number (4881870).

Almost surely, 2^55723340 is an apocalyptic number.

It is an amenable number.

55723340 is an abundant number, since it is smaller than the sum of its proper divisors (61441540).

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

55723340 is a wasteful number, since it uses less digits than its factorization.

55723340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481 (or 3479 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 55723340 is about 7464.8067624018. The cubic root of 55723340 is about 381.9551586117.

The spelling of 55723340 in words is "fifty-five million, seven hundred twenty-three thousand, three hundred forty".