426537505 has 8 divisors (see below), whose sum is σ = 514444392. Its totient is φ = 339497088.

The previous prime is 426537499. The next prime is 426537521. The reversal of 426537505 is 505735624.

It can be written as a sum of positive squares in 4 ways, for example, as 39589264 + 386948241 = 6292^2 + 19671^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426537505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 215532 + ... + 217501.

It is an arithmetic number, because the mean of its divisors is an integer number (64305549).

Almost surely, 2^426537505 is an apocalyptic number.

It is an amenable number.

426537505 is a deficient number, since it is larger than the sum of its proper divisors (87906887).

426537505 is a wasteful number, since it uses less digits than its factorization.

426537505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433235.

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 426537505 is about 20652.7844369712. The cubic root of 426537505 is about 752.7528493243.

The spelling of 426537505 in words is "four hundred twenty-six million, five hundred thirty-seven thousand, five hundred five".