55040330 has 8 divisors (see below), whose sum is σ = 99072612. Its totient is φ = 22016128.

The previous prime is 55040309. The next prime is 55040351. The reversal of 55040330 is 3304055.

It is an interprime number because it is at equal distance from previous prime (55040309) and next prime (55040351).

It can be written as a sum of positive squares in 2 ways, for example, as 54626881 + 413449 = 7391^2 + 643^2 .

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, 2752007 + ... + 2752026.

Almost surely, 2^55040330 is an apocalyptic number.

55040330 is a deficient number, since it is larger than the sum of its proper divisors (44032282).

55040330 is a wasteful number, since it uses less digits than its factorization.

55040330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504040.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 55040330 is about 7418.9170368727. The cubic root of 55040330 is about 380.3881767428.

Adding to 55040330 its reverse (3304055), we get a palindrome (58344385).

The spelling of 55040330 in words is "fifty-five million, forty thousand, three hundred thirty".