55439500757197 has 4 divisors (see below), whose sum is σ = 55439824963456. Its totient is φ = 55439176550940.

The previous prime is 55439500757183. The next prime is 55439500757231. The reversal of 55439500757197 is 79175700593455.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55439500757197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55439500757117) 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, 161846493 + ... + 162188674.

It is an arithmetic number, because the mean of its divisors is an integer number (13859956240864).

Almost surely, 2^{55439500757197} is an apocalyptic number.

It is an amenable number.

55439500757197 is a deficient number, since it is larger than the sum of its proper divisors (324206259).

55439500757197 is a wasteful number, since it uses less digits than its factorization.

55439500757197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324206258.

The product of its (nonzero) digits is 208372500, while the sum is 67.

The spelling of 55439500757197 in words is "fifty-five trillion, four hundred thirty-nine billion, five hundred million, seven hundred fifty-seven thousand, one hundred ninety-seven".