52408247 has 4 divisors (see below), whose sum is σ = 52452120. Its totient is φ = 52364376.

The previous prime is 52408231. The next prime is 52408267. The reversal of 52408247 is 74280425.

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 52408247 - 2⁴ = 52408231 is a prime.

It is a super-2 number, since 2×52408247² = 5493248707226018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52408207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20093 + ... + 22550.

It is an arithmetic number, because the mean of its divisors is an integer number (13113030).

Almost surely, 2^52408247 is an apocalyptic number.

52408247 is a deficient number, since it is larger than the sum of its proper divisors (43873).

52408247 is a wasteful number, since it uses less digits than its factorization.

52408247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43872.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 52408247 is about 7239.3540457696. The cubic root of 52408247 is about 374.2253567613.

The spelling of 52408247 in words is "fifty-two million, four hundred eight thousand, two hundred forty-seven".