53898121 has 4 divisors (see below), whose sum is σ = 53940244. Its totient is φ = 53856000.

The previous prime is 53898107. The next prime is 53898137. The reversal of 53898121 is 12189835.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50922496 + 2975625 = 7136^2 + 1725^2 .

It is a cyclic number.

It is not a de Polignac number, because 53898121 - 2⁹ = 53897609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53898101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19080 + ... + 21721.

It is an arithmetic number, because the mean of its divisors is an integer number (13485061).

Almost surely, 2^53898121 is an apocalyptic number.

It is an amenable number.

53898121 is a deficient number, since it is larger than the sum of its proper divisors (42123).

53898121 is a wasteful number, since it uses less digits than its factorization.

53898121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42122.

The product of its digits is 17280, while the sum is 37.

The square root of 53898121 is about 7341.5339677754. The cubic root of 53898121 is about 377.7384625529.

The spelling of 53898121 in words is "fifty-three million, eight hundred ninety-eight thousand, one hundred twenty-one".