53387145 has 24 divisors (see below), whose sum is σ = 105758016. Its totient is φ = 24405408.

The previous prime is 53387143. The next prime is 53387161. The reversal of 53387145 is 54178335.

53387145 is a `hidden beast` number, since 533 + 87 + 1 + 45 = 666.

It is not a de Polignac number, because 53387145 - 2¹ = 53387143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53387143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84427 + ... + 85056.

It is an arithmetic number, because the mean of its divisors is an integer number (4406584).

Almost surely, 2^53387145 is an apocalyptic number.

It is an amenable number.

53387145 is a deficient number, since it is larger than the sum of its proper divisors (52370871).

53387145 is a wasteful number, since it uses less digits than its factorization.

53387145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169501 (or 169498 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 53387145 is about 7306.6507375131. The cubic root of 53387145 is about 376.5409657916.

It can be divided in two parts, 533 and 87145, that added together give a palindrome (87678).

The spelling of 53387145 in words is "fifty-three million, three hundred eighty-seven thousand, one hundred forty-five".