550397963 has 4 divisors (see below), whose sum is σ = 568152768. Its totient is φ = 532643160.

The previous prime is 550397957. The next prime is 550397987. The reversal of 550397963 is 369793055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 369793055 = 5 ⋅73958611.

It is a cyclic number.

It is not a de Polignac number, because 550397963 - 2⁸ = 550397707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550397993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8877356 + ... + 8877417.

It is an arithmetic number, because the mean of its divisors is an integer number (142038192).

Almost surely, 2^550397963 is an apocalyptic number.

550397963 is a deficient number, since it is larger than the sum of its proper divisors (17754805).

550397963 is a wasteful number, since it uses less digits than its factorization.

550397963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17754804.

The product of its (nonzero) digits is 765450, while the sum is 47.

The square root of 550397963 is about 23460.5618645419. The cubic root of 550397963 is about 819.5188348068.

The spelling of 550397963 in words is "five hundred fifty million, three hundred ninety-seven thousand, nine hundred sixty-three".