55355430 has 32 divisors (see below), whose sum is σ = 143073504. Its totient is φ = 13625856.

The previous prime is 55355407. The next prime is 55355431. The reversal of 55355430 is 3455355.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55355431) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 70579 + ... + 71358.

It is an arithmetic number, because the mean of its divisors is an integer number (4471047).

Almost surely, 2^55355430 is an apocalyptic number.

55355430 is an abundant number, since it is smaller than the sum of its proper divisors (87718074).

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

55355430 is a wasteful number, since it uses less digits than its factorization.

55355430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141960.

The product of its (nonzero) digits is 22500, while the sum is 30.

The square root of 55355430 is about 7440.1229828545. The cubic root of 55355430 is about 381.1126897804.

The spelling of 55355430 in words is "fifty-five million, three hundred fifty-five thousand, four hundred thirty".