53121450 has 24 divisors (see below), whose sum is σ = 131741568. Its totient is φ = 14165680.

The previous prime is 53121427. The next prime is 53121457. The reversal of 53121450 is 5412135.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53121457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176922 + ... + 177221.

It is an arithmetic number, because the mean of its divisors is an integer number (5489232).

Almost surely, 2^53121450 is an apocalyptic number.

53121450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

53121450 is an abundant number, since it is smaller than the sum of its proper divisors (78620118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53121450 is a wasteful number, since it uses less digits than its factorization.

53121450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354158 (or 354153 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 53121450 is about 7288.4463364972. The cubic root of 53121450 is about 375.9152753497.

Adding to 53121450 its reverse (5412135), we get a palindrome (58533585).

The spelling of 53121450 in words is "fifty-three million, one hundred twenty-one thousand, four hundred fifty".