55975646 has 16 divisors (see below), whose sum is σ = 86980608. Its totient is φ = 26988600.

The previous prime is 55975609. The next prime is 55975649. The reversal of 55975646 is 64657955.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55975646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55975649) 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, 17831 + ... + 20733.

It is an arithmetic number, because the mean of its divisors is an integer number (5436288).

Almost surely, 2^55975646 is an apocalyptic number.

55975646 is a deficient number, since it is larger than the sum of its proper divisors (31004962).

55975646 is a wasteful number, since it uses less digits than its factorization.

55975646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247.

The product of its digits is 1134000, while the sum is 47.

The square root of 55975646 is about 7481.6873765214. The cubic root of 55975646 is about 382.5307671721.

The spelling of 55975646 in words is "fifty-five million, nine hundred seventy-five thousand, six hundred forty-six".