55921594 has 8 divisors (see below), whose sum is σ = 83987028. Its totient is φ = 27925920.

The previous prime is 55921573. The next prime is 55921597. The reversal of 55921594 is 49512955.

It can be written as a sum of positive squares in 2 ways, for example, as 55577025 + 344569 = 7455^2 + 587^2 .

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

It is not an unprimeable number, because it can be changed into a prime (55921597) 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, 15387 + ... + 18670.

Almost surely, 2^55921594 is an apocalyptic number.

55921594 is a deficient number, since it is larger than the sum of its proper divisors (28065434).

55921594 is a wasteful number, since it uses less digits than its factorization.

55921594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34880.

The product of its digits is 81000, while the sum is 40.

The square root of 55921594 is about 7478.0742173370. The cubic root of 55921594 is about 382.4075992505.

The spelling of 55921594 in words is "fifty-five million, nine hundred twenty-one thousand, five hundred ninety-four".