55399212249 has 16 divisors (see below), whose sum is σ = 74105001600. Its totient is φ = 36813254400.

The previous prime is 55399212217. The next prime is 55399212277. The reversal of 55399212249 is 94221299355.

It is a happy number.

55399212249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55399212249 - 2⁵ = 55399212217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55399212299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1666539 + ... + 1699455.

It is an arithmetic number, because the mean of its divisors is an integer number (4631562600).

Almost surely, 2^55399212249 is an apocalyptic number.

It is an amenable number.

55399212249 is a deficient number, since it is larger than the sum of its proper divisors (18705789351).

55399212249 is a wasteful number, since it uses less digits than its factorization.

55399212249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34720.

The product of its digits is 1749600, while the sum is 51.

The spelling of 55399212249 in words is "fifty-five billion, three hundred ninety-nine million, two hundred twelve thousand, two hundred forty-nine".