55633775 has 24 divisors (see below), whose sum is σ = 74013120. Its totient is φ = 41333760.

The previous prime is 55633771. The next prime is 55633783. The reversal of 55633775 is 57733655.

It is not a de Polignac number, because 55633775 - 2² = 55633771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55633771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32747 + ... + 34403.

It is an arithmetic number, because the mean of its divisors is an integer number (3083880).

Almost surely, 2^55633775 is an apocalyptic number.

55633775 is a deficient number, since it is larger than the sum of its proper divisors (18379345).

55633775 is a wasteful number, since it uses less digits than its factorization.

55633775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763 (or 1758 counting only the distinct ones).

The product of its digits is 330750, while the sum is 41.

The square root of 55633775 is about 7458.8051992259. The cubic root of 55633775 is about 381.7504080301.

The spelling of 55633775 in words is "fifty-five million, six hundred thirty-three thousand, seven hundred seventy-five".