53186413 has 12 divisors (see below), whose sum is σ = 62721660. Its totient is φ = 44960832.

The previous prime is 53186369. The next prime is 53186417. The reversal of 53186413 is 31468135.

It can be written as a sum of positive squares in 2 ways, for example, as 20958084 + 32228329 = 4578^2 + 5677^2 .

It is not a de Polignac number, because 53186413 - 2¹⁷ = 53055341 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 (53186417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3858 + ... + 11011.

It is an arithmetic number, because the mean of its divisors is an integer number (5226805).

Almost surely, 2^53186413 is an apocalyptic number.

It is an amenable number.

53186413 is a deficient number, since it is larger than the sum of its proper divisors (9535247).

53186413 is a wasteful number, since it uses less digits than its factorization.

53186413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14956 (or 14949 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 53186413 is about 7292.9015487664. The cubic root of 53186413 is about 376.0684503605.

The spelling of 53186413 in words is "fifty-three million, one hundred eighty-six thousand, four hundred thirteen".