507503421 has 16 divisors (see below), whose sum is σ = 752310400. Its totient is φ = 338131584.

The previous prime is 507503419. The next prime is 507503443. The reversal of 507503421 is 124305705.

It is a happy number.

It is not a de Polignac number, because 507503421 - 2¹ = 507503419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (507503411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49800 + ... + 59118.

It is an arithmetic number, because the mean of its divisors is an integer number (47019400).

Almost surely, 2^507503421 is an apocalyptic number.

It is an amenable number.

507503421 is a deficient number, since it is larger than the sum of its proper divisors (244806979).

507503421 is a wasteful number, since it uses less digits than its factorization.

507503421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11345 (or 11339 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 507503421 is about 22527.8365805507. The cubic root of 507503421 is about 797.6511421035.

The spelling of 507503421 in words is "five hundred seven million, five hundred three thousand, four hundred twenty-one".