491847550 has 24 divisors (see below), whose sum is σ = 944350272. Its totient is φ = 190392000.

The previous prime is 491847539. The next prime is 491847563. The reversal of 491847550 is 55748194.

It is a junction number, because it is equal to n+sod(n) for n = 491847497 and 491847506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157111 + ... + 160210.

It is an arithmetic number, because the mean of its divisors is an integer number (39347928).

Almost surely, 2^491847550 is an apocalyptic number.

491847550 is a deficient number, since it is larger than the sum of its proper divisors (452502722).

491847550 is a wasteful number, since it uses less digits than its factorization.

491847550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317364 (or 317359 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 491847550 is about 22177.6362581768. The cubic root of 491847550 is about 789.3631303634.

The spelling of 491847550 in words is "four hundred ninety-one million, eight hundred forty-seven thousand, five hundred fifty".