55719138 has 8 divisors (see below), whose sum is σ = 111438288. Its totient is φ = 18573044.

The previous prime is 55719137. The next prime is 55719227. The reversal of 55719138 is 83191755.

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

55719138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 55719096 and 55719105.

It is not an unprimeable number, because it can be changed into a prime (55719137) 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, 4643256 + ... + 4643267.

It is an arithmetic number, because the mean of its divisors is an integer number (13929786).

Almost surely, 2^55719138 is an apocalyptic number.

55719138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55719138 is a wasteful number, since it uses less digits than its factorization.

55719138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9286528.

The product of its digits is 37800, while the sum is 39.

The square root of 55719138 is about 7464.5253030585. The cubic root of 55719138 is about 381.9455575127.

The spelling of 55719138 in words is "fifty-five million, seven hundred nineteen thousand, one hundred thirty-eight".