55317938 has 16 divisors (see below), whose sum is σ = 91541016. Its totient is φ = 24908160.

The previous prime is 55317931. The next prime is 55317943. The reversal of 55317938 is 83971355.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10387729 + 44930209 = 3223^2 + 6703^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 55317895 and 55317904.

It is not an unprimeable number, because it can be changed into a prime (55317931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24881 + ... + 27012.

Almost surely, 2^55317938 is an apocalyptic number.

55317938 is a deficient number, since it is larger than the sum of its proper divisors (36223078).

55317938 is a wasteful number, since it uses less digits than its factorization.

55317938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51949.

The product of its digits is 113400, while the sum is 41.

The square root of 55317938 is about 7437.6029740771. The cubic root of 55317938 is about 381.0266283403.

The spelling of 55317938 in words is "fifty-five million, three hundred seventeen thousand, nine hundred thirty-eight".