55323331 has 8 divisors (see below), whose sum is σ = 63787104. Its totient is φ = 46999680.

The previous prime is 55323319. The next prime is 55323431. The reversal of 55323331 is 13332355.

It is a happy number.

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

It is not a de Polignac number, because 55323331 - 2⁵ = 55323299 is a prime.

It is a super-2 number, since 2×55323331² = 6121341905871122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55323296 and 55323305.

It is not an unprimeable number, because it can be changed into a prime (55323311) 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, 34180 + ... + 35761.

It is an arithmetic number, because the mean of its divisors is an integer number (7973388).

Almost surely, 2^55323331 is an apocalyptic number.

55323331 is a deficient number, since it is larger than the sum of its proper divisors (8463773).

55323331 is a wasteful number, since it uses less digits than its factorization.

55323331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70061.

The product of its digits is 4050, while the sum is 25.

The square root of 55323331 is about 7437.9655148434. The cubic root of 55323331 is about 381.0390101578.

Adding to 55323331 its reverse (13332355), we get a palindrome (68655686).

The spelling of 55323331 in words is "fifty-five million, three hundred twenty-three thousand, three hundred thirty-one".