53213523 has 16 divisors (see below), whose sum is σ = 77734272. Its totient is φ = 32112000.

The previous prime is 53213497. The next prime is 53213543. The reversal of 53213523 is 32531235.

It is a happy number.

It is not a de Polignac number, because 53213523 - 2¹² = 53209427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53213493 and 53213502.

It is not an unprimeable number, because it can be changed into a prime (53213543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4608 + ... + 11298.

It is an arithmetic number, because the mean of its divisors is an integer number (4858392).

Almost surely, 2^53213523 is an apocalyptic number.

53213523 is a deficient number, since it is larger than the sum of its proper divisors (24520749).

53213523 is a wasteful number, since it uses less digits than its factorization.

53213523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6946.

The product of its digits is 2700, while the sum is 24.

The square root of 53213523 is about 7294.7599686350. The cubic root of 53213523 is about 376.1323356235.

Adding to 53213523 its reverse (32531235), we get a palindrome (85744758).

The spelling of 53213523 in words is "fifty-three million, two hundred thirteen thousand, five hundred twenty-three".