491155050 has 24 divisors (see below), whose sum is σ = 1218064896. Its totient is φ = 130974640.

The previous prime is 491155037. The next prime is 491155069. The reversal of 491155050 is 50551194.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 491154999 and 491155017.

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, 1637034 + ... + 1637333.

It is an arithmetic number, because the mean of its divisors is an integer number (50752704).

Almost surely, 2^491155050 is an apocalyptic number.

491155050 is an abundant number, since it is smaller than the sum of its proper divisors (726909846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491155050 is a wasteful number, since it uses less digits than its factorization.

491155050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274382 (or 3274377 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 491155050 is about 22162.0181842719. The cubic root of 491155050 is about 788.9924933545.

The spelling of 491155050 in words is "four hundred ninety-one million, one hundred fifty-five thousand, fifty".