55993965 has 8 divisors (see below), whose sum is σ = 89590368. Its totient is φ = 29863440.

The previous prime is 55993963. The next prime is 55993981. The reversal of 55993965 is 56939955.

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

It is not a de Polignac number, because 55993965 - 2¹ = 55993963 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55993961) 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, 1866451 + ... + 1866480.

It is an arithmetic number, because the mean of its divisors is an integer number (11198796).

Almost surely, 2^55993965 is an apocalyptic number.

It is an amenable number.

55993965 is a deficient number, since it is larger than the sum of its proper divisors (33596403).

55993965 is a wasteful number, since it uses less digits than its factorization.

55993965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732939.

The product of its digits is 1640250, while the sum is 51.

The square root of 55993965 is about 7482.9115322847. The cubic root of 55993965 is about 382.5724925611.

The spelling of 55993965 in words is "fifty-five million, nine hundred ninety-three thousand, nine hundred sixty-five".