55257199693 has 8 divisors (see below), whose sum is σ = 56279633216. Its totient is φ = 54241941600.

The previous prime is 55257199667. The next prime is 55257199727. The reversal of 55257199693 is 39699175255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55257199693 is a prime.

It is the 235069-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55257199793) by changing a digit.

It is a nontrivial repunit in base 235068.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1778313 + ... + 1809118.

It is an arithmetic number, because the mean of its divisors is an integer number (7034954152).

Almost surely, 2^55257199693 is an apocalyptic number.

It is an amenable number.

55257199693 is a deficient number, since it is larger than the sum of its proper divisors (1022433523).

55257199693 is a wasteful number, since it uses less digits than its factorization.

55257199693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587715.

The product of its digits is 22963500, while the sum is 61.

The spelling of 55257199693 in words is "fifty-five billion, two hundred fifty-seven million, one hundred ninety-nine thousand, six hundred ninety-three".