55533697 has 4 divisors (see below), whose sum is σ = 55933360. Its totient is φ = 55134036.

The previous prime is 55533677. The next prime is 55533701. The reversal of 55533697 is 79633555.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79633555 = 5 ⋅15926711.

It is a cyclic number.

It is not a de Polignac number, because 55533697 - 2¹¹ = 55531649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55533677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199623 + ... + 199900.

It is an arithmetic number, because the mean of its divisors is an integer number (13983340).

Almost surely, 2^55533697 is an apocalyptic number.

It is an amenable number.

55533697 is a deficient number, since it is larger than the sum of its proper divisors (399663).

55533697 is a wasteful number, since it uses less digits than its factorization.

55533697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399662.

The product of its digits is 425250, while the sum is 43.

The square root of 55533697 is about 7452.0934642555. The cubic root of 55533697 is about 381.5213640200.

The spelling of 55533697 in words is "fifty-five million, five hundred thirty-three thousand, six hundred ninety-seven".