494257551 has 8 divisors (see below), whose sum is σ = 665408640. Its totient is φ = 326305752.

The previous prime is 494257537. The next prime is 494257553. The reversal of 494257551 is 155752494.

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

It is not a de Polignac number, because 494257551 - 2⁹ = 494257039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494257553) 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, 799461 + ... + 800078.

It is an arithmetic number, because the mean of its divisors is an integer number (83176080).

Almost surely, 2^494257551 is an apocalyptic number.

494257551 is a deficient number, since it is larger than the sum of its proper divisors (171151089).

494257551 is a wasteful number, since it uses less digits than its factorization.

494257551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599645.

The product of its digits is 252000, while the sum is 42.

The square root of 494257551 is about 22231.9038995764. The cubic root of 494257551 is about 790.6502956198.

The spelling of 494257551 in words is "four hundred ninety-four million, two hundred fifty-seven thousand, five hundred fifty-one".