52578457 has 4 divisors (see below), whose sum is σ = 52827856. Its totient is φ = 52329060.

The previous prime is 52578419. The next prime is 52578473. The reversal of 52578457 is 75487525.

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 52578457 - 2⁷ = 52578329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52578497) 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, 124383 + ... + 124804.

It is an arithmetic number, because the mean of its divisors is an integer number (13206964).

Almost surely, 2^52578457 is an apocalyptic number.

It is an amenable number.

52578457 is a deficient number, since it is larger than the sum of its proper divisors (249399).

52578457 is a wasteful number, since it uses less digits than its factorization.

52578457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249398.

The product of its digits is 392000, while the sum is 43.

The square root of 52578457 is about 7251.1003992498. The cubic root of 52578457 is about 374.6300517481.

It can be divided in two parts, 52578 and 457, that added together give a palindrome (53035).

The spelling of 52578457 in words is "fifty-two million, five hundred seventy-eight thousand, four hundred fifty-seven".