497521982 has 4 divisors (see below), whose sum is σ = 746282976. Its totient is φ = 248760990.

The previous prime is 497521963. The next prime is 497521987. The reversal of 497521982 is 289125794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 289125794 = 2 ⋅144562897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497521987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124380494 + ... + 124380497.

It is an arithmetic number, because the mean of its divisors is an integer number (186570744).

Almost surely, 2^497521982 is an apocalyptic number.

497521982 is a deficient number, since it is larger than the sum of its proper divisors (248760994).

497521982 is a wasteful number, since it uses less digits than its factorization.

497521982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248760993.

The product of its digits is 362880, while the sum is 47.

The square root of 497521982 is about 22305.2007836737. The cubic root of 497521982 is about 792.3871510841.

The spelling of 497521982 in words is "four hundred ninety-seven million, five hundred twenty-one thousand, nine hundred eighty-two".