53112709 has 24 divisors (see below), whose sum is σ = 61959968. Its totient is φ = 45239040.

The previous prime is 53112691. The next prime is 53112713. The reversal of 53112709 is 90721135.

It is not a de Polignac number, because 53112709 - 2⁵ = 53112677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53112739) 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, 251614 + ... + 251824.

Almost surely, 2^53112709 is an apocalyptic number.

It is an amenable number.

53112709 is a deficient number, since it is larger than the sum of its proper divisors (8847259).

53112709 is a wasteful number, since it uses less digits than its factorization.

53112709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 53112709 is about 7287.8466641389. The cubic root of 53112709 is about 375.8946555833.

The spelling of 53112709 in words is "fifty-three million, one hundred twelve thousand, seven hundred nine".