55540838 has 8 divisors (see below), whose sum is σ = 87696120. Its totient is φ = 26308800.

The previous prime is 55540831. The next prime is 55540843. The reversal of 55540838 is 83804555.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 1461601 = 55540838 / (5 + 5 + 5 + 4 + 0 + 8 + 3 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55540831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730763 + ... + 730838.

It is an arithmetic number, because the mean of its divisors is an integer number (10962015).

Almost surely, 2^55540838 is an apocalyptic number.

55540838 is a deficient number, since it is larger than the sum of its proper divisors (32155282).

55540838 is a wasteful number, since it uses less digits than its factorization.

55540838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461622.

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 55540838 is about 7452.5725759633. The cubic root of 55540838 is about 381.5377164177.

The spelling of 55540838 in words is "fifty-five million, five hundred forty thousand, eight hundred thirty-eight".