491250450 has 24 divisors (see below), whose sum is σ = 1218301488. Its totient is φ = 131000080.

The previous prime is 491250449. The next prime is 491250457. The reversal of 491250450 is 54052194.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (491250457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1637352 + ... + 1637651.

It is an arithmetic number, because the mean of its divisors is an integer number (50762562).

Almost surely, 2^491250450 is an apocalyptic number.

491250450 is an abundant number, since it is smaller than the sum of its proper divisors (727051038).

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

491250450 is a wasteful number, since it uses less digits than its factorization.

491250450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275018 (or 3275013 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 491250450 is about 22164.1704108230. The cubic root of 491250450 is about 789.0435736335.

The spelling of 491250450 in words is "four hundred ninety-one million, two hundred fifty thousand, four hundred fifty".