53145487 has 8 divisors (see below), whose sum is σ = 55062000. Its totient is φ = 51234624.

The previous prime is 53145437. The next prime is 53145503. The reversal of 53145487 is 78454135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53145487 - 2¹¹ = 53143439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53145437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29548 + ... + 31294.

It is an arithmetic number, because the mean of its divisors is an integer number (6882750).

Almost surely, 2^53145487 is an apocalyptic number.

53145487 is a deficient number, since it is larger than the sum of its proper divisors (1916513).

53145487 is a wasteful number, since it uses less digits than its factorization.

53145487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2825.

The product of its digits is 67200, while the sum is 37.

The square root of 53145487 is about 7290.0951296948. The cubic root of 53145487 is about 375.9719662780.

It can be divided in two parts, 5314 and 5487, that added together give a palindrome (10801).

The spelling of 53145487 in words is "fifty-three million, one hundred forty-five thousand, four hundred eighty-seven".