55120533157 has 2 divisors, whose sum is σ = 55120533158. Its totient is φ = 55120533156.

The previous prime is 55120533133. The next prime is 55120533179. The reversal of 55120533157 is 75133502155.

55120533157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51495409476 + 3625123681 = 226926^2 + 60209^2 .

It is a cyclic number.

It is not a de Polignac number, because 55120533157 - 2²⁷ = 54986315429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55120533187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27560266578 + 27560266579.

It is an arithmetic number, because the mean of its divisors is an integer number (27560266579).

Almost surely, 2^55120533157 is an apocalyptic number.

It is an amenable number.

55120533157 is a deficient number, since it is larger than the sum of its proper divisors (1).

55120533157 is an equidigital number, since it uses as much as digits as its factorization.

55120533157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78750, while the sum is 37.

The spelling of 55120533157 in words is "fifty-five billion, one hundred twenty million, five hundred thirty-three thousand, one hundred fifty-seven".