53207439 has 16 divisors (see below), whose sum is σ = 74480640. Its totient is φ = 33742080.

The previous prime is 53207423. The next prime is 53207459. The reversal of 53207439 is 93470235.

It is a happy number.

It is not a de Polignac number, because 53207439 - 2⁴ = 53207423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53207419) 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, 639 + ... + 10335.

It is an arithmetic number, because the mean of its divisors is an integer number (4655040).

Almost surely, 2^53207439 is an apocalyptic number.

53207439 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

53207439 is a deficient number, since it is larger than the sum of its proper divisors (21273201).

53207439 is a wasteful number, since it uses less digits than its factorization.

53207439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9790.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 53207439 is about 7294.3429450500. The cubic root of 53207439 is about 376.1180004432.

The spelling of 53207439 in words is "fifty-three million, two hundred seven thousand, four hundred thirty-nine".