52455309 has 4 divisors (see below), whose sum is σ = 69940416. Its totient is φ = 34970204.

The previous prime is 52455283. The next prime is 52455349. The reversal of 52455309 is 90355425.

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 52455309 - 2¹² = 52451213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52455309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52455349) 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, 8742549 + ... + 8742554.

It is an arithmetic number, because the mean of its divisors is an integer number (17485104).

Almost surely, 2^52455309 is an apocalyptic number.

It is an amenable number.

52455309 is a deficient number, since it is larger than the sum of its proper divisors (17485107).

52455309 is a wasteful number, since it uses less digits than its factorization.

52455309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17485106.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 52455309 is about 7242.6037445107. The cubic root of 52455309 is about 374.3373399297.

The spelling of 52455309 in words is "fifty-two million, four hundred fifty-five thousand, three hundred nine".