52644649 has 4 divisors (see below), whose sum is σ = 55415440. Its totient is φ = 49873860.

The previous prime is 52644643. The next prime is 52644661. The reversal of 52644649 is 94644625.

It is a happy number.

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 not a de Polignac number, because 52644649 - 2⁵ = 52644617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52644643) 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, 1385367 + ... + 1385404.

It is an arithmetic number, because the mean of its divisors is an integer number (13853860).

Almost surely, 2^52644649 is an apocalyptic number.

It is an amenable number.

52644649 is a deficient number, since it is larger than the sum of its proper divisors (2770791).

52644649 is a wasteful number, since it uses less digits than its factorization.

52644649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770790.

The product of its digits is 207360, while the sum is 40.

The square root of 52644649 is about 7255.6632363968. The cubic root of 52644649 is about 374.7871954089.

The spelling of 52644649 in words is "fifty-two million, six hundred forty-four thousand, six hundred forty-nine".