52561519 has 2 divisors, whose sum is σ = 52561520.
Its totient is φ = 52561518.
The previous prime is 52561517. The next prime is 52561529. The reversal of 52561519 is 91516525.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 52561519 - 21 = 52561517 is a prime.
It is a super-2 number, since 2×525615192 = 5525426559174722, which contains 22 as substring.
Together with 52561517, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (52561517) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26280759 + 26280760.
It is an arithmetic number, because the mean of its divisors is an integer number (26280760).
Almost surely, 252561519 is an apocalyptic number.
52561519 is a deficient number, since it is larger than the sum of its proper divisors (1).
52561519 is an equidigital number, since it uses as much as digits as its factorization.
52561519 is an evil number, because the sum of its binary digits is even.
The product of its digits is 13500, while the sum is 34.
The square root of 52561519 is about 7249.9323445119.
The cubic root of 52561519 is about 374.5898187598.
The spelling of 52561519 in words is "fifty-two million, five hundred sixty-one thousand, five hundred nineteen".