55615233 has 8 divisors (see below), whose sum is σ = 74229696. Its totient is φ = 37038800.

The previous prime is 55615213. The next prime is 55615247. The reversal of 55615233 is 33251655.

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

It is a cyclic number.

It is not a de Polignac number, because 55615233 - 2¹² = 55611137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55615233.

It is not an unprimeable number, because it can be changed into a prime (55615213) 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 7 ways as a sum of consecutive naturals, for example, 5898 + ... + 12083.

It is an arithmetic number, because the mean of its divisors is an integer number (9278712).

Almost surely, 2^55615233 is an apocalyptic number.

It is an amenable number.

55615233 is a deficient number, since it is larger than the sum of its proper divisors (18614463).

55615233 is a wasteful number, since it uses less digits than its factorization.

55615233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19015.

The product of its digits is 13500, while the sum is 30.

The square root of 55615233 is about 7457.5621351753. The cubic root of 55615233 is about 381.7079925335.

Adding to 55615233 its reverse (33251655), we get a palindrome (88866888).

The spelling of 55615233 in words is "fifty-five million, six hundred fifteen thousand, two hundred thirty-three".