52642457 has 4 divisors (see below), whose sum is σ = 60162816. Its totient is φ = 45122100.

The previous prime is 52642441. The next prime is 52642459. The reversal of 52642457 is 75424625.

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 52642457 - 2⁴ = 52642441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52642459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3760169 + ... + 3760182.

It is an arithmetic number, because the mean of its divisors is an integer number (15040704).

Almost surely, 2^52642457 is an apocalyptic number.

It is an amenable number.

52642457 is a deficient number, since it is larger than the sum of its proper divisors (7520359).

52642457 is an equidigital number, since it uses as much as digits as its factorization.

52642457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7520358.

The product of its digits is 67200, while the sum is 35.

The square root of 52642457 is about 7255.5121804046. The cubic root of 52642457 is about 374.7819935827.

It can be divided in two parts, 5 and 2642457, that added together give a palindrome (2642462).

The spelling of 52642457 in words is "fifty-two million, six hundred forty-two thousand, four hundred fifty-seven".