507271421 has 4 divisors (see below), whose sum is σ = 508631772. Its totient is φ = 505911072.

The previous prime is 507271399. The next prime is 507271469. The reversal of 507271421 is 124172705.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 246804100 + 260467321 = 15710^2 + 16139^2 .

It is a cyclic number.

It is not a de Polignac number, because 507271421 - 2¹⁰ = 507270397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (507271021) 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, 679616 + ... + 680361.

It is an arithmetic number, because the mean of its divisors is an integer number (127157943).

Almost surely, 2^507271421 is an apocalyptic number.

It is an amenable number.

507271421 is a deficient number, since it is larger than the sum of its proper divisors (1360351).

507271421 is a wasteful number, since it uses less digits than its factorization.

507271421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360350.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 507271421 is about 22522.6868068621. The cubic root of 507271421 is about 797.5295775563.

The spelling of 507271421 in words is "five hundred seven million, two hundred seventy-one thousand, four hundred twenty-one".