387513 has 12 divisors (see below), whose sum is σ = 639808. Its totient is φ = 221400.

The previous prime is 387509. The next prime is 387529. The reversal of 387513 is 315783.

It is not a de Polignac number, because 387513 - 2² = 387509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3013 + ... + 3138.

2³⁸⁷⁵¹³ is an apocalyptic number.

It is an amenable number.

387513 is a deficient number, since it is larger than the sum of its proper divisors (252295).

387513 is a wasteful number, since it uses less digits than its factorization.

387513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6164 (or 6161 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 387513 is about 622.5054216631. The cubic root of 387513 is about 72.9058020638.

It can be divided in two parts, 387 and 513, that added together give a square (900 = 30²).

The spelling of 387513 in words is "three hundred eighty-seven thousand, five hundred thirteen".