521077 has 4 divisors (see below), whose sum is σ = 526240. Its totient is φ = 515916.

The previous prime is 521063. The next prime is 521107. The reversal of 521077 is 770125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 521077 - 2¹⁵ = 488309 is a prime.

It is a Duffinian number.

521077 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521047) 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, 2427 + ... + 2632.

It is an arithmetic number, because the mean of its divisors is an integer number (131560).

2⁵²¹⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

521077 is a deficient number, since it is larger than the sum of its proper divisors (5163).

521077 is a wasteful number, since it uses less digits than its factorization.

521077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 521077 is about 721.8566339655. The cubic root of 521077 is about 80.4699938319.

The spelling of 521077 in words is "five hundred twenty-one thousand, seventy-seven".