55042402 has 8 divisors (see below), whose sum is σ = 82766700. Its totient is φ = 27453504.

The previous prime is 55042399. The next prime is 55042423. The reversal of 55042402 is 20424055.

55042402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 55041561 + 841 = 7419^2 + 29^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32827 + ... + 34462.

Almost surely, 2^55042402 is an apocalyptic number.

55042402 is a deficient number, since it is larger than the sum of its proper divisors (27724298).

55042402 is a wasteful number, since it uses less digits than its factorization.

55042402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67700.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 55042402 is about 7419.0566785812. The cubic root of 55042402 is about 380.3929499361.

Adding to 55042402 its reverse (20424055), we get a palindrome (75466457).

The spelling of 55042402 in words is "fifty-five million, forty-two thousand, four hundred two".