55320357 has 8 divisors (see below), whose sum is σ = 75559680. Its totient is φ = 35980640.

The previous prime is 55320341. The next prime is 55320379. The reversal of 55320357 is 75302355.

55320357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55320357 - 2⁴ = 55320341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55320157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224757 + ... + 225002.

It is an arithmetic number, because the mean of its divisors is an integer number (9444960).

Almost surely, 2^55320357 is an apocalyptic number.

It is an amenable number.

55320357 is a deficient number, since it is larger than the sum of its proper divisors (20239323).

55320357 is a wasteful number, since it uses less digits than its factorization.

55320357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449803.

The product of its (nonzero) digits is 15750, while the sum is 30.

The square root of 55320357 is about 7437.7655918965. The cubic root of 55320357 is about 381.0321822348.

It can be divided in two parts, 553 and 20357, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 55320357 in words is "fifty-five million, three hundred twenty thousand, three hundred fifty-seven".