55321995 has 32 divisors (see below), whose sum is σ = 96966720. Its totient is φ = 26808320.

The previous prime is 55321991. The next prime is 55322009. The reversal of 55321995 is 59912355.

It is not a de Polignac number, because 55321995 - 2² = 55321991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55321991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3655 + ... + 11135.

It is an arithmetic number, because the mean of its divisors is an integer number (3030210).

Almost surely, 2^55321995 is an apocalyptic number.

55321995 is a deficient number, since it is larger than the sum of its proper divisors (41644725).

55321995 is a wasteful number, since it uses less digits than its factorization.

55321995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7535.

The product of its digits is 60750, while the sum is 39.

The square root of 55321995 is about 7437.8757047964. The cubic root of 55321995 is about 381.0359429032.

The spelling of 55321995 in words is "fifty-five million, three hundred twenty-one thousand, nine hundred ninety-five".