55147398 has 8 divisors (see below), whose sum is σ = 110294808. Its totient is φ = 18382464.

The previous prime is 55147397. The next prime is 55147447. The reversal of 55147398 is 89374155.

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

55147398 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55147397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4595611 + ... + 4595622.

It is an arithmetic number, because the mean of its divisors is an integer number (13786851).

Almost surely, 2^55147398 is an apocalyptic number.

55147398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55147398 is a wasteful number, since it uses less digits than its factorization.

55147398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9191238.

The product of its digits is 151200, while the sum is 42.

The square root of 55147398 is about 7426.1294090529. The cubic root of 55147398 is about 380.6346688531.

The spelling of 55147398 in words is "fifty-five million, one hundred forty-seven thousand, three hundred ninety-eight".