491875250 has 16 divisors (see below), whose sum is σ = 920790936. Its totient is φ = 196750000.

The previous prime is 491875243. The next prime is 491875277. The reversal of 491875250 is 52578194.

It can be written as a sum of positive squares in 4 ways, for example, as 228040201 + 263835049 = 15101^2 + 16243^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 491875198 and 491875207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983501 + ... + 984000.

Almost surely, 2^491875250 is an apocalyptic number.

491875250 is a deficient number, since it is larger than the sum of its proper divisors (428915686).

491875250 is a wasteful number, since it uses less digits than its factorization.

491875250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967518 (or 1967508 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 491875250 is about 22178.2607523674. The cubic root of 491875250 is about 789.3779486055.

The spelling of 491875250 in words is "four hundred ninety-one million, eight hundred seventy-five thousand, two hundred fifty".