53415523 has 4 divisors (see below), whose sum is σ = 61046320. Its totient is φ = 45784728.

The previous prime is 53415463. The next prime is 53415529. The reversal of 53415523 is 32551435.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53415523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53415491 and 53415500.

It is not an unprimeable number, because it can be changed into a prime (53415529) 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, 3815388 + ... + 3815401.

It is an arithmetic number, because the mean of its divisors is an integer number (15261580).

Almost surely, 2^53415523 is an apocalyptic number.

53415523 is a deficient number, since it is larger than the sum of its proper divisors (7630797).

53415523 is an equidigital number, since it uses as much as digits as its factorization.

53415523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7630796.

The product of its digits is 9000, while the sum is 28.

The square root of 53415523 is about 7308.5924089389. The cubic root of 53415523 is about 376.6076709057.

Adding to 53415523 its reverse (32551435), we get a palindrome (85966958).

The spelling of 53415523 in words is "fifty-three million, four hundred fifteen thousand, five hundred twenty-three".