55031200797 has 4 divisors (see below), whose sum is σ = 73374934400. Its totient is φ = 36687467196.

The previous prime is 55031200771. The next prime is 55031200823. The reversal of 55031200797 is 79700213055.

55031200797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (55031200771) and next prime (55031200823).

It is not a de Polignac number, because 55031200797 - 2⁶ = 55031200733 is a prime.

It is a super-2 number, since 2×55031200797² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55031200747) 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, 9171866797 + ... + 9171866802.

It is an arithmetic number, because the mean of its divisors is an integer number (18343733600).

Almost surely, 2^55031200797 is an apocalyptic number.

It is an amenable number.

55031200797 is a deficient number, since it is larger than the sum of its proper divisors (18343733603).

55031200797 is a wasteful number, since it uses less digits than its factorization.

55031200797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18343733602.

The product of its (nonzero) digits is 66150, while the sum is 39.

The spelling of 55031200797 in words is "fifty-five billion, thirty-one million, two hundred thousand, seven hundred ninety-seven".