55335447157 has 4 divisors (see below), whose sum is σ = 55369251756. Its totient is φ = 55301642560.

The previous prime is 55335447149. The next prime is 55335447179. The reversal of 55335447157 is 75174453355.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9398526916 + 45936920241 = 96946^2 + 214329^2 .

It is a cyclic number.

It is not a de Polignac number, because 55335447157 - 2³ = 55335447149 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55335447157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55335447127) 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, 16899844 + ... + 16903117.

It is an arithmetic number, because the mean of its divisors is an integer number (13842312939).

Almost surely, 2^55335447157 is an apocalyptic number.

It is an amenable number.

55335447157 is a deficient number, since it is larger than the sum of its proper divisors (33804599).

55335447157 is a wasteful number, since it uses less digits than its factorization.

55335447157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33804598.

The product of its digits is 4410000, while the sum is 49.

The spelling of 55335447157 in words is "fifty-five billion, three hundred thirty-five million, four hundred forty-seven thousand, one hundred fifty-seven".