53121541 has 16 divisors (see below), whose sum is σ = 59133888. Its totient is φ = 47712720.

The previous prime is 53121539. The next prime is 53121557. The reversal of 53121541 is 14512135.

It is a happy number.

It is not a de Polignac number, because 53121541 - 2¹ = 53121539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53121521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142231 + ... + 142603.

It is an arithmetic number, because the mean of its divisors is an integer number (3695868).

Almost surely, 2^53121541 is an apocalyptic number.

It is an amenable number.

53121541 is a deficient number, since it is larger than the sum of its proper divisors (6012347).

53121541 is a wasteful number, since it uses less digits than its factorization.

53121541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 491 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 53121541 is about 7288.4525792516. The cubic root of 53121541 is about 375.9154900042.

Adding to 53121541 its reverse (14512135), we get a palindrome (67633676).

The spelling of 53121541 in words is "fifty-three million, one hundred twenty-one thousand, five hundred forty-one".