55933138 has 4 divisors (see below), whose sum is σ = 83899710. Its totient is φ = 27966568.

The previous prime is 55933117. The next prime is 55933139. The reversal of 55933138 is 83133955.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29953729 + 25979409 = 5473^2 + 5097^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55933097 and 55933106.

It is not an unprimeable number, because it can be changed into a prime (55933139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13983283 + ... + 13983286.

Almost surely, 2^55933138 is an apocalyptic number.

55933138 is a deficient number, since it is larger than the sum of its proper divisors (27966572).

55933138 is a wasteful number, since it uses less digits than its factorization.

55933138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27966571.

The product of its digits is 48600, while the sum is 37.

The square root of 55933138 is about 7478.8460339814. The cubic root of 55933138 is about 382.4339111471.

The spelling of 55933138 in words is "fifty-five million, nine hundred thirty-three thousand, one hundred thirty-eight".