52521019 has 4 divisors (see below), whose sum is σ = 53940544. Its totient is φ = 51101496.

The previous prime is 52520981. The next prime is 52521047. The reversal of 52521019 is 91012525.

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 52521019 - 2¹⁹ = 51996731 is a prime.

It is a super-2 number, since 2×52521019² = 5516914873596722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52520984 and 52521002.

It is not an unprimeable number, because it can be changed into a prime (52521319) 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, 709707 + ... + 709780.

It is an arithmetic number, because the mean of its divisors is an integer number (13485136).

Almost surely, 2^52521019 is an apocalyptic number.

52521019 is a deficient number, since it is larger than the sum of its proper divisors (1419525).

52521019 is a wasteful number, since it uses less digits than its factorization.

52521019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419524.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 52521019 is about 7247.1386767468. The cubic root of 52521019 is about 374.4935836805.

The spelling of 52521019 in words is "fifty-two million, five hundred twenty-one thousand, nineteen".