55211330 has 8 divisors (see below), whose sum is σ = 99380412. Its totient is φ = 22084528.

The previous prime is 55211309. The next prime is 55211353. The reversal of 55211330 is 3311255.

It can be written as a sum of positive squares in 2 ways, for example, as 45657049 + 9554281 = 6757^2 + 3091^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2760557 + ... + 2760576.

Almost surely, 2^55211330 is an apocalyptic number.

55211330 is a deficient number, since it is larger than the sum of its proper divisors (44169082).

55211330 is a wasteful number, since it uses less digits than its factorization.

55211330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5521140.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 55211330 is about 7430.4326926499. The cubic root of 55211330 is about 380.7817011029.

Adding to 55211330 its reverse (3311255), we get a palindrome (58522585).

The spelling of 55211330 in words is "fifty-five million, two hundred eleven thousand, three hundred thirty".