53621716 has 6 divisors (see below), whose sum is σ = 93838010. Its totient is φ = 26810856.

The previous prime is 53621707. The next prime is 53621719. The reversal of 53621716 is 61712635.

53621716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 38489616 + 15132100 = 6204^2 + 3890^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53621719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6702711 + ... + 6702718.

Almost surely, 2^53621716 is an apocalyptic number.

It is an amenable number.

53621716 is a deficient number, since it is larger than the sum of its proper divisors (40216294).

53621716 is a wasteful number, since it uses less digits than its factorization.

53621716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13405433 (or 13405431 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 53621716 is about 7322.6850266825. The cubic root of 53621716 is about 377.0916385854.

The spelling of 53621716 in words is "fifty-three million, six hundred twenty-one thousand, seven hundred sixteen".