495781553 has 8 divisors (see below), whose sum is σ = 508190760. Its totient is φ = 483387520.

The previous prime is 495781541. The next prime is 495781571. The reversal of 495781553 is 355187594.

It can be written as a sum of positive squares in 4 ways, for example, as 110523169 + 385258384 = 10513^2 + 19628^2 .

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 495781553 - 2¹⁰ = 495780529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 495781498 and 495781507.

It is not an unprimeable number, because it can be changed into a prime (495781753) 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, 92051 + ... + 97287.

It is an arithmetic number, because the mean of its divisors is an integer number (63523845).

Almost surely, 2^495781553 is an apocalyptic number.

It is an amenable number.

495781553 is a deficient number, since it is larger than the sum of its proper divisors (12409207).

495781553 is a wasteful number, since it uses less digits than its factorization.

495781553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7587.

The product of its digits is 756000, while the sum is 47.

The square root of 495781553 is about 22266.1526312922. The cubic root of 495781553 is about 791.4620965992.

The spelling of 495781553 in words is "four hundred ninety-five million, seven hundred eighty-one thousand, five hundred fifty-three".