501428427 has 4 divisors (see below), whose sum is σ = 668571240. Its totient is φ = 334285616.

The previous prime is 501428423. The next prime is 501428437. The reversal of 501428427 is 724824105.

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

It is a cyclic number.

It is not a de Polignac number, because 501428427 - 2² = 501428423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (501428423) 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, 83571402 + ... + 83571407.

It is an arithmetic number, because the mean of its divisors is an integer number (167142810).

Almost surely, 2^501428427 is an apocalyptic number.

501428427 is a deficient number, since it is larger than the sum of its proper divisors (167142813).

501428427 is a wasteful number, since it uses less digits than its factorization.

501428427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167142812.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 501428427 is about 22392.5975938478. The cubic root of 501428427 is about 794.4556362009.

The spelling of 501428427 in words is "five hundred one million, four hundred twenty-eight thousand, four hundred twenty-seven".