53529639 has 16 divisors (see below), whose sum is σ = 74003328. Its totient is φ = 34389792.

The previous prime is 53529601. The next prime is 53529643. The reversal of 53529639 is 93692535.

It is not a de Polignac number, because 53529639 - 2⁹ = 53529127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53529639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53529649) 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, 9624 + ... + 14130.

It is an arithmetic number, because the mean of its divisors is an integer number (4625208).

Almost surely, 2^53529639 is an apocalyptic number.

53529639 is a deficient number, since it is larger than the sum of its proper divisors (20473689).

53529639 is a wasteful number, since it uses less digits than its factorization.

53529639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4654.

The product of its digits is 218700, while the sum is 42.

The square root of 53529639 is about 7316.3952189586. The cubic root of 53529639 is about 376.8756728507.

The spelling of 53529639 in words is "fifty-three million, five hundred twenty-nine thousand, six hundred thirty-nine".