494975551 has 8 divisors (see below), whose sum is σ = 573436064. Its totient is φ = 418452480.

The previous prime is 494975539. The next prime is 494975561. The reversal of 494975551 is 155579494.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 494975551 - 2¹⁵ = 494942783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 494975495 and 494975504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494975521) 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, 483810 + ... + 484831.

It is an arithmetic number, because the mean of its divisors is an integer number (71679508).

Almost surely, 2^494975551 is an apocalyptic number.

494975551 is a deficient number, since it is larger than the sum of its proper divisors (78460513).

494975551 is an equidigital number, since it uses as much as digits as its factorization.

494975551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968721.

The product of its digits is 1134000, while the sum is 49.

The square root of 494975551 is about 22248.0460040876. The cubic root of 494975551 is about 791.0329653722.

The spelling of 494975551 in words is "four hundred ninety-four million, nine hundred seventy-five thousand, five hundred fifty-one".