52736257 has 4 divisors (see below), whose sum is σ = 60270016. Its totient is φ = 45202500.

The previous prime is 52736251. The next prime is 52736273. The reversal of 52736257 is 75263725.

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 52736257 - 2³ = 52736249 is a prime.

It is a super-2 number, since 2×52736257² = 5562225604740098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52736251) 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, 3766869 + ... + 3766882.

It is an arithmetic number, because the mean of its divisors is an integer number (15067504).

Almost surely, 2^52736257 is an apocalyptic number.

It is an amenable number.

52736257 is a deficient number, since it is larger than the sum of its proper divisors (7533759).

52736257 is an equidigital number, since it uses as much as digits as its factorization.

52736257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533758.

The product of its digits is 88200, while the sum is 37.

The square root of 52736257 is about 7261.9733543989. The cubic root of 52736257 is about 375.0044609840.

The spelling of 52736257 in words is "fifty-two million, seven hundred thirty-six thousand, two hundred fifty-seven".