55129402 has 16 divisors (see below), whose sum is σ = 89424000. Its totient is φ = 25390528.

The previous prime is 55129387. The next prime is 55129427. The reversal of 55129402 is 20492155.

55129402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 15652 + ... + 18847.

It is an arithmetic number, because the mean of its divisors is an integer number (5589000).

Almost surely, 2^55129402 is an apocalyptic number.

55129402 is a deficient number, since it is larger than the sum of its proper divisors (34294598).

55129402 is a wasteful number, since it uses less digits than its factorization.

55129402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34565.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 55129402 is about 7424.9176426409. The cubic root of 55129402 is about 380.5932607542.

The spelling of 55129402 in words is "fifty-five million, one hundred twenty-nine thousand, four hundred two".