55332638 has 8 divisors (see below), whose sum is σ = 85861080. Its totient is φ = 26712280.

The previous prime is 55332623. The next prime is 55332647. The reversal of 55332638 is 83623355.

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

It is a junction number, because it is equal to n+sod(n) for n = 55332598 and 55332607.

It is a congruent number.

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, 476948 + ... + 477063.

It is an arithmetic number, because the mean of its divisors is an integer number (10732635).

Almost surely, 2^55332638 is an apocalyptic number.

55332638 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

55332638 is a deficient number, since it is larger than the sum of its proper divisors (30528442).

55332638 is a wasteful number, since it uses less digits than its factorization.

55332638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954042.

The product of its digits is 64800, while the sum is 35.

The square root of 55332638 is about 7438.5911300461. The cubic root of 55332638 is about 381.0603762563.

The spelling of 55332638 in words is "fifty-five million, three hundred thirty-two thousand, six hundred thirty-eight".