495645457 has 4 divisors (see below), whose sum is σ = 521732080. Its totient is φ = 469558836.

The previous prime is 495645413. The next prime is 495645461. The reversal of 495645457 is 754546594.

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: 754546594 = 2 ⋅377273297.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-495645457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 495645457.

It is not an unprimeable number, because it can be changed into a prime (495645497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13043283 + ... + 13043320.

It is an arithmetic number, because the mean of its divisors is an integer number (130433020).

Almost surely, 2^495645457 is an apocalyptic number.

It is an amenable number.

495645457 is a deficient number, since it is larger than the sum of its proper divisors (26086623).

495645457 is a wasteful number, since it uses less digits than its factorization.

495645457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26086622.

The product of its digits is 3024000, while the sum is 49.

The square root of 495645457 is about 22263.0963030752. The cubic root of 495645457 is about 791.3896690805.

The spelling of 495645457 in words is "four hundred ninety-five million, six hundred forty-five thousand, four hundred fifty-seven".