55206783 has 12 divisors (see below), whose sum is σ = 79888848. Its totient is φ = 36737280.

The previous prime is 55206743. The next prime is 55206817. The reversal of 55206783 is 38760255.

It is not a de Polignac number, because 55206783 - 2⁶ = 55206719 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55206733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123 + ... + 10508.

It is an arithmetic number, because the mean of its divisors is an integer number (6657404).

Almost surely, 2^55206783 is an apocalyptic number.

55206783 is a deficient number, since it is larger than the sum of its proper divisors (24682065).

55206783 is a wasteful number, since it uses less digits than its factorization.

55206783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11214 (or 11211 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 55206783 is about 7430.1267149356. The cubic root of 55206783 is about 380.7712475606.

The spelling of 55206783 in words is "fifty-five million, two hundred six thousand, seven hundred eighty-three".