53513501 has 4 divisors (see below), whose sum is σ = 56661372. Its totient is φ = 50365632.

The previous prime is 53513491. The next prime is 53513561. The reversal of 53513501 is 10531535.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14638276 + 38875225 = 3826^2 + 6235^2 .

It is a cyclic number.

It is not a de Polignac number, because 53513501 - 2²² = 49319197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53513561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1573910 + ... + 1573943.

It is an arithmetic number, because the mean of its divisors is an integer number (14165343).

Almost surely, 2^53513501 is an apocalyptic number.

It is an amenable number.

53513501 is a deficient number, since it is larger than the sum of its proper divisors (3147871).

53513501 is a wasteful number, since it uses less digits than its factorization.

53513501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147870.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 53513501 is about 7315.2922703061. The cubic root of 53513501 is about 376.8377958227.

The spelling of 53513501 in words is "fifty-three million, five hundred thirteen thousand, five hundred one".