55353746291 has 4 divisors (see below), whose sum is σ = 58609849032. Its totient is φ = 52097643552.

The previous prime is 55353746267. The next prime is 55353746299. The reversal of 55353746291 is 19264735355.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55353746291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55353746299) 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, 1628051345 + ... + 1628051378.

It is an arithmetic number, because the mean of its divisors is an integer number (14652462258).

Almost surely, 2^55353746291 is an apocalyptic number.

55353746291 is a deficient number, since it is larger than the sum of its proper divisors (3256102741).

55353746291 is a wasteful number, since it uses less digits than its factorization.

55353746291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256102740.

The product of its digits is 3402000, while the sum is 50.

The spelling of 55353746291 in words is "fifty-five billion, three hundred fifty-three million, seven hundred forty-six thousand, two hundred ninety-one".