55506323 has 4 divisors (see below), whose sum is σ = 55577640. Its totient is φ = 55435008.

The previous prime is 55506313. The next prime is 55506329. The reversal of 55506323 is 32360555.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32360555 = 5 ⋅6472111.

It is a cyclic number.

It is not a de Polignac number, because 55506323 - 2⁴ = 55506307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55506329) 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, 34478 + ... + 36051.

It is an arithmetic number, because the mean of its divisors is an integer number (13894410).

Almost surely, 2^55506323 is an apocalyptic number.

55506323 is a deficient number, since it is larger than the sum of its proper divisors (71317).

55506323 is an equidigital number, since it uses as much as digits as its factorization.

55506323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71316.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 55506323 is about 7450.2565727631. The cubic root of 55506323 is about 381.4586664576.

Adding to 55506323 its reverse (32360555), we get a palindrome (87866878).

The spelling of 55506323 in words is "fifty-five million, five hundred six thousand, three hundred twenty-three".