55249845421 has 8 divisors (see below), whose sum is σ = 55303585920. Its totient is φ = 55196131872.

The previous prime is 55249845403. The next prime is 55249845433. The reversal of 55249845421 is 12454894255.

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 55249845421 - 2³⁵ = 20890107053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55249845121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8343850 + ... + 8350468.

It is an arithmetic number, because the mean of its divisors is an integer number (6912948240).

Almost surely, 2^55249845421 is an apocalyptic number.

It is an amenable number.

55249845421 is a deficient number, since it is larger than the sum of its proper divisors (53740499).

55249845421 is a wasteful number, since it uses less digits than its factorization.

55249845421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13475.

The product of its digits is 2304000, while the sum is 49.

The spelling of 55249845421 in words is "fifty-five billion, two hundred forty-nine million, eight hundred forty-five thousand, four hundred twenty-one".