53121229 has 8 divisors (see below), whose sum is σ = 60767168. Its totient is φ = 45489600.

The previous prime is 53121227. The next prime is 53121251. The reversal of 53121229 is 92212135.

It is a happy number.

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 53121229 - 2¹ = 53121227 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53121221) 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, 6154 + ... + 12004.

It is an arithmetic number, because the mean of its divisors is an integer number (7595896).

Almost surely, 2^53121229 is an apocalyptic number.

It is an amenable number.

53121229 is a deficient number, since it is larger than the sum of its proper divisors (7645939).

53121229 is a wasteful number, since it uses less digits than its factorization.

53121229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7155.

The product of its digits is 1080, while the sum is 25.

The square root of 53121229 is about 7288.4311755000. The cubic root of 53121229 is about 375.9147540450.

The spelling of 53121229 in words is "fifty-three million, one hundred twenty-one thousand, two hundred twenty-nine".