508045387 has 4 divisors (see below), whose sum is σ = 519860440. Its totient is φ = 496230336.

The previous prime is 508045327. The next prime is 508045411. The reversal of 508045387 is 783540805.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783540805 = 5 ⋅156708161.

It is a cyclic number.

It is not a de Polignac number, because 508045387 - 2²³ = 499656779 is a prime.

It is a super-2 number, since 2×508045387² = 516220230503959538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (508045327) 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, 5907462 + ... + 5907547.

It is an arithmetic number, because the mean of its divisors is an integer number (129965110).

Almost surely, 2^508045387 is an apocalyptic number.

508045387 is a deficient number, since it is larger than the sum of its proper divisors (11815053).

508045387 is a wasteful number, since it uses less digits than its factorization.

508045387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11815052.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 508045387 is about 22539.8621779282. The cubic root of 508045387 is about 797.9349799307.

The spelling of 508045387 in words is "five hundred eight million, forty-five thousand, three hundred eighty-seven".