53153621 has 8 divisors (see below), whose sum is σ = 58384320. Its totient is φ = 48166272.

The previous prime is 53153603. The next prime is 53153627. The reversal of 53153621 is 12635135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53153621 - 2⁶ = 53153557 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 (53153627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60380 + ... + 61253.

It is an arithmetic number, because the mean of its divisors is an integer number (7298040).

Almost surely, 2^53153621 is an apocalyptic number.

It is an amenable number.

53153621 is a deficient number, since it is larger than the sum of its proper divisors (5230699).

53153621 is a wasteful number, since it uses less digits than its factorization.

53153621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121675.

The product of its digits is 2700, while the sum is 26.

The square root of 53153621 is about 7290.6529885875. The cubic root of 53153621 is about 375.9911463322.

Adding to 53153621 its reverse (12635135), we get a palindrome (65788756).

The spelling of 53153621 in words is "fifty-three million, one hundred fifty-three thousand, six hundred twenty-one".