52509457 has 16 divisors (see below), whose sum is σ = 70503552. Its totient is φ = 37768320.

The previous prime is 52509449. The next prime is 52509461. The reversal of 52509457 is 75490525.

It is a cyclic number.

It is not a de Polignac number, because 52509457 - 2³ = 52509449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52509487) 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 15 ways as a sum of consecutive naturals, for example, 25228 + ... + 27229.

It is an arithmetic number, because the mean of its divisors is an integer number (4406472).

Almost surely, 2^52509457 is an apocalyptic number.

It is an amenable number.

52509457 is a deficient number, since it is larger than the sum of its proper divisors (17994095).

52509457 is a wasteful number, since it uses less digits than its factorization.

52509457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52488.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 52509457 is about 7246.3409387083. The cubic root of 52509457 is about 374.4661012702.

The spelling of 52509457 in words is "fifty-two million, five hundred nine thousand, four hundred fifty-seven".