501264387 has 12 divisors (see below), whose sum is σ = 779744784. Its totient is φ = 308470320.

The previous prime is 501264377. The next prime is 501264409. The reversal of 501264387 is 783462105.

501264387 is a `hidden beast` number, since 5 + 0 + 1 + 2 + 643 + 8 + 7 = 666.

It is not a de Polignac number, because 501264387 - 2⁴ = 501264371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (501264347) 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, 2142039 + ... + 2142272.

It is an arithmetic number, because the mean of its divisors is an integer number (64978732).

Almost surely, 2^501264387 is an apocalyptic number.

501264387 is a deficient number, since it is larger than the sum of its proper divisors (278480397).

501264387 is a wasteful number, since it uses less digits than its factorization.

501264387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4284330 (or 4284327 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 501264387 is about 22388.9344766561. The cubic root of 501264387 is about 794.3689925847.

The spelling of 501264387 in words is "five hundred one million, two hundred sixty-four thousand, three hundred eighty-seven".