55402555 has 8 divisors (see below), whose sum is σ = 71597232. Its totient is φ = 40912608.

The previous prime is 55402553. The next prime is 55402573. The reversal of 55402555 is 55520455.

55402555 = T₃₂₆ + T₃₂₇ + ... + T₇₁₅.

55402555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 55402555 - 2¹ = 55402553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55402553) by changing a digit.

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, 426109 + ... + 426238.

It is an arithmetic number, because the mean of its divisors is an integer number (8949654).

Almost surely, 2^55402555 is an apocalyptic number.

55402555 is a deficient number, since it is larger than the sum of its proper divisors (16194677).

55402555 is a wasteful number, since it uses less digits than its factorization.

55402555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852365.

The product of its (nonzero) digits is 25000, while the sum is 31.

The square root of 55402555 is about 7443.2892594605. The cubic root of 55402555 is about 381.2208082997.

The spelling of 55402555 in words is "fifty-five million, four hundred two thousand, five hundred fifty-five".