53690312 has 16 divisors (see below), whose sum is σ = 108413340. Its totient is φ = 24780096.

The previous prime is 53690311. The next prime is 53690317. The reversal of 53690312 is 21309635.

It can be written as a sum of positive squares in 2 ways, for example, as 52330756 + 1359556 = 7234^2 + 1166^2 .

It is not an unprimeable number, because it can be changed into a prime (53690311) 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, 258023 + ... + 258230.

Almost surely, 2^53690312 is an apocalyptic number.

53690312 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

53690312 is an abundant number, since it is smaller than the sum of its proper divisors (54723028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53690312 is a wasteful number, since it uses less digits than its factorization.

53690312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516272 (or 516268 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 53690312 is about 7327.3673307676. The cubic root of 53690312 is about 377.2523692099.

Adding to 53690312 its reverse (21309635), we get a palindrome (74999947).

The spelling of 53690312 in words is "fifty-three million, six hundred ninety thousand, three hundred twelve".