55497693 has 4 divisors (see below), whose sum is σ = 73996928. Its totient is φ = 36998460.

The previous prime is 55497691. The next prime is 55497703. The reversal of 55497693 is 39679455.

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 not a de Polignac number, because 55497693 - 2¹ = 55497691 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 (55497691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9249613 + ... + 9249618.

It is an arithmetic number, because the mean of its divisors is an integer number (18499232).

Almost surely, 2^55497693 is an apocalyptic number.

It is an amenable number.

55497693 is a deficient number, since it is larger than the sum of its proper divisors (18499235).

55497693 is a wasteful number, since it uses less digits than its factorization.

55497693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18499234.

The product of its digits is 1020600, while the sum is 48.

The square root of 55497693 is about 7449.6773755647. The cubic root of 55497693 is about 381.4388959838.

The spelling of 55497693 in words is "fifty-five million, four hundred ninety-seven thousand, six hundred ninety-three".