497155209 has 8 divisors (see below), whose sum is σ = 672767520. Its totient is φ = 326489856.

The previous prime is 497155171. The next prime is 497155231. The reversal of 497155209 is 902551794.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 497155209 - 2¹² = 497151113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (497155249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1236504 + ... + 1236905.

It is an arithmetic number, because the mean of its divisors is an integer number (84095940).

Almost surely, 2^497155209 is an apocalyptic number.

It is an amenable number.

497155209 is a deficient number, since it is larger than the sum of its proper divisors (175612311).

497155209 is a wasteful number, since it uses less digits than its factorization.

497155209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473479.

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 497155209 is about 22296.9775754473. The cubic root of 497155209 is about 792.1923873894.

The spelling of 497155209 in words is "four hundred ninety-seven million, one hundred fifty-five thousand, two hundred nine".