494975557 has 4 divisors (see below), whose sum is σ = 495552640. Its totient is φ = 494398476.

The previous prime is 494975539. The next prime is 494975561. The reversal of 494975557 is 755579494.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 755579494 = 2 ⋅377789747.

It is a cyclic number.

It is not a de Polignac number, because 494975557 - 2²³ = 486586949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 494975498 and 494975507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494975597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287253 + ... + 288970.

It is an arithmetic number, because the mean of its divisors is an integer number (123888160).

Almost surely, 2^494975557 is an apocalyptic number.

It is an amenable number.

494975557 is a deficient number, since it is larger than the sum of its proper divisors (577083).

494975557 is an equidigital number, since it uses as much as digits as its factorization.

494975557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577082.

The product of its digits is 7938000, while the sum is 55.

The square root of 494975557 is about 22248.0461389309. The cubic root of 494975557 is about 791.0329685685.

The spelling of 494975557 in words is "four hundred ninety-four million, nine hundred seventy-five thousand, five hundred fifty-seven".