52645819 has 4 divisors (see below), whose sum is σ = 53137944. Its totient is φ = 52153696.

The previous prime is 52645807. The next prime is 52645847. The reversal of 52645819 is 91854625.

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 52645819 - 2¹¹ = 52643771 is a prime.

It is a super-2 number, since 2×52645819² = 5543164516361522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52645849) 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, 245902 + ... + 246115.

It is an arithmetic number, because the mean of its divisors is an integer number (13284486).

Almost surely, 2^52645819 is an apocalyptic number.

52645819 is a deficient number, since it is larger than the sum of its proper divisors (492125).

52645819 is a wasteful number, since it uses less digits than its factorization.

52645819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492124.

The product of its digits is 86400, while the sum is 40.

The square root of 52645819 is about 7255.7438626236. The cubic root of 52645819 is about 374.7899718719.

The spelling of 52645819 in words is "fifty-two million, six hundred forty-five thousand, eight hundred nineteen".