55073775 has 24 divisors (see below), whose sum is σ = 91580944. Its totient is φ = 29203200.

The previous prime is 55073773. The next prime is 55073803. The reversal of 55073775 is 57737055.

It is not a de Polignac number, because 55073775 - 2¹ = 55073773 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55073773) 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, 11547 + ... + 15603.

Almost surely, 2^55073775 is an apocalyptic number.

55073775 is a deficient number, since it is larger than the sum of its proper divisors (36507169).

55073775 is a wasteful number, since it uses less digits than its factorization.

55073775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251 (or 4246 counting only the distinct ones).

The product of its (nonzero) digits is 128625, while the sum is 39.

The square root of 55073775 is about 7421.1707297434. The cubic root of 55073775 is about 380.4652081765.

The spelling of 55073775 in words is "fifty-five million, seventy-three thousand, seven hundred seventy-five".