53720525 has 12 divisors (see below), whose sum is σ = 69510432. Its totient is φ = 41107440.

The previous prime is 53720519. The next prime is 53720531. The reversal of 53720525 is 52502735.

It is an interprime number because it is at equal distance from previous prime (53720519) and next prime (53720531).

It is not a de Polignac number, because 53720525 - 2⁴ = 53720509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46139 + ... + 47288.

It is an arithmetic number, because the mean of its divisors is an integer number (5792536).

Almost surely, 2^53720525 is an apocalyptic number.

It is an amenable number.

53720525 is a deficient number, since it is larger than the sum of its proper divisors (15789907).

53720525 is a wasteful number, since it uses less digits than its factorization.

53720525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93460 (or 93455 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 29.

The square root of 53720525 is about 7329.4286953350. The cubic root of 53720525 is about 377.3231193328.

It can be divided in two parts, 53720 and 525, that added together give a palindrome (54245).

The spelling of 53720525 in words is "fifty-three million, seven hundred twenty thousand, five hundred twenty-five".