538520806 has 8 divisors (see below), whose sum is σ = 808373664. Its totient is φ = 269062920.

The previous prime is 538520791. The next prime is 538520821. The reversal of 538520806 is 608025835.

It is an interprime number because it is at equal distance from previous prime (538520791) and next prime (538520821).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95310 + ... + 100801.

It is an arithmetic number, because the mean of its divisors is an integer number (101046708).

Almost surely, 2^538520806 is an apocalyptic number.

538520806 is a deficient number, since it is larger than the sum of its proper divisors (269852858).

538520806 is a wasteful number, since it uses less digits than its factorization.

538520806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197486.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 538520806 is about 23206.0510643237. The cubic root of 538520806 is about 813.5810586811.

It can be divided in two parts, 538 and 520806, that multiplied together give a triangular number (280193628 = T₂₃₆₇₂).

The spelling of 538520806 in words is "five hundred thirty-eight million, five hundred twenty thousand, eight hundred six".