55235331 has 8 divisors (see below), whose sum is σ = 81830160. Its totient is φ = 36823536.

The previous prime is 55235309. The next prime is 55235333. The reversal of 55235331 is 13353255.

It is not a de Polignac number, because 55235331 - 2⁷ = 55235203 is a prime.

It is a super-2 number, since 2×55235331² = 6101883581359122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2045753 = 55235331 / (5 + 5 + 2 + 3 + 5 + 3 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 55235295 and 55235304.

It is not an unprimeable number, because it can be changed into a prime (55235333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022850 + ... + 1022903.

It is an arithmetic number, because the mean of its divisors is an integer number (10228770).

Almost surely, 2^55235331 is an apocalyptic number.

55235331 is a deficient number, since it is larger than the sum of its proper divisors (26594829).

55235331 is a wasteful number, since it uses less digits than its factorization.

55235331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045762 (or 2045756 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 55235331 is about 7432.0475644334. The cubic root of 55235331 is about 380.8368698375.

Adding to 55235331 its reverse (13353255), we get a palindrome (68588586).

The spelling of 55235331 in words is "fifty-five million, two hundred thirty-five thousand, three hundred thirty-one".