55398270 has 16 divisors (see below), whose sum is σ = 132955920. Its totient is φ = 14772864.

The previous prime is 55398263. The next prime is 55398293. The reversal of 55398270 is 7289355.

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 7 ways as a sum of consecutive naturals, for example, 923275 + ... + 923334.

It is an arithmetic number, because the mean of its divisors is an integer number (8309745).

Almost surely, 2^55398270 is an apocalyptic number.

55398270 is an abundant number, since it is smaller than the sum of its proper divisors (77557650).

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

55398270 is a wasteful number, since it uses less digits than its factorization.

55398270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846619.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 55398270 is about 7443.0014107213. The cubic root of 55398270 is about 381.2109797922.

The spelling of 55398270 in words is "fifty-five million, three hundred ninety-eight thousand, two hundred seventy".