55438635 has 16 divisors (see below), whose sum is σ = 101373696. Its totient is φ = 25343328.

The previous prime is 55438589. The next prime is 55438661. The reversal of 55438635 is 53683455.

It is not a de Polignac number, because 55438635 - 2⁸ = 55438379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55438593 and 55438602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263889 + ... + 264098.

It is an arithmetic number, because the mean of its divisors is an integer number (6335856).

Almost surely, 2^55438635 is an apocalyptic number.

55438635 is a deficient number, since it is larger than the sum of its proper divisors (45935061).

55438635 is a wasteful number, since it uses less digits than its factorization.

55438635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528002.

The product of its digits is 216000, while the sum is 39.

The square root of 55438635 is about 7445.7125246681. The cubic root of 55438635 is about 381.3035449296.

The spelling of 55438635 in words is "fifty-five million, four hundred thirty-eight thousand, six hundred thirty-five".