550813923 has 48 divisors (see below), whose sum is σ = 922967136. Its totient is φ = 312837120.

The previous prime is 550813919. The next prime is 550813927. The reversal of 550813923 is 329318055.

550813923 is a `hidden beast` number, since 550 + 8 + 13 + 92 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (550813919) and next prime (550813927).

It is not a de Polignac number, because 550813923 - 2² = 550813919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550813927) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 492561 + ... + 493677.

It is an arithmetic number, because the mean of its divisors is an integer number (19228482).

Almost surely, 2^550813923 is an apocalyptic number.

550813923 is a deficient number, since it is larger than the sum of its proper divisors (372153213).

550813923 is a wasteful number, since it uses less digits than its factorization.

550813923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1441 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 550813923 is about 23469.4252805645. The cubic root of 550813923 is about 819.7252316560.

The spelling of 550813923 in words is "five hundred fifty million, eight hundred thirteen thousand, nine hundred twenty-three".