507247921 has 8 divisors (see below), whose sum is σ = 565354080. Its totient is φ = 452282688.

The previous prime is 507247919. The next prime is 507247933. The reversal of 507247921 is 129742705.

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

It is not a de Polignac number, because 507247921 - 2¹ = 507247919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (507247991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 784891 + ... + 785536.

It is an arithmetic number, because the mean of its divisors is an integer number (70669260).

Almost surely, 2^507247921 is an apocalyptic number.

It is an amenable number.

507247921 is a deficient number, since it is larger than the sum of its proper divisors (58106159).

507247921 is a wasteful number, since it uses less digits than its factorization.

507247921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570463.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 507247921 is about 22522.1651046253. The cubic root of 507247921 is about 797.5172618388.

The spelling of 507247921 in words is "five hundred seven million, two hundred forty-seven thousand, nine hundred twenty-one".