55494008397 has 24 divisors (see below), whose sum is σ = 80351668800. Its totient is φ = 36906717888.

The previous prime is 55494008389. The next prime is 55494008399. The reversal of 55494008397 is 79380049455.

55494008397 is a `hidden beast` number, since 5 + 549 + 4 + 0 + 0 + 8 + 3 + 97 = 666.

It is not a de Polignac number, because 55494008397 - 2³ = 55494008389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55494008399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11279104 + ... + 11284022.

It is an arithmetic number, because the mean of its divisors is an integer number (3347986200).

Almost surely, 2^55494008397 is an apocalyptic number.

It is an amenable number.

55494008397 is a deficient number, since it is larger than the sum of its proper divisors (24857660403).

55494008397 is a wasteful number, since it uses less digits than its factorization.

55494008397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7697 (or 7694 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 55494008397 in words is "fifty-five billion, four hundred ninety-four million, eight thousand, three hundred ninety-seven".