53748409 has 16 divisors (see below), whose sum is σ = 64620864. Its totient is φ = 44049600.

The previous prime is 53748391. The next prime is 53748419. The reversal of 53748409 is 90484735.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53748409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53748419) 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, 1779 + ... + 10519.

It is an arithmetic number, because the mean of its divisors is an integer number (4038804).

Almost surely, 2^53748409 is an apocalyptic number.

It is an amenable number.

53748409 is a deficient number, since it is larger than the sum of its proper divisors (10872455).

53748409 is a wasteful number, since it uses less digits than its factorization.

53748409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8808.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 53748409 is about 7331.3306432052. The cubic root of 53748409 is about 377.3883920754.

The spelling of 53748409 in words is "fifty-three million, seven hundred forty-eight thousand, four hundred nine".