53890421 has 8 divisors (see below), whose sum is σ = 58100280. Its totient is φ = 49689792.

The previous prime is 53890411. The next prime is 53890427. The reversal of 53890421 is 12409835.

It can be written as a sum of positive squares in 4 ways, for example, as 31696900 + 22193521 = 5630^2 + 4711^2 .

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 53890421 - 2¹⁸ = 53628277 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 (53890427) 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, 14291 + ... + 17663.

It is an arithmetic number, because the mean of its divisors is an integer number (7262535).

Almost surely, 2^53890421 is an apocalyptic number.

It is an amenable number.

53890421 is a deficient number, since it is larger than the sum of its proper divisors (4209859).

53890421 is a wasteful number, since it uses less digits than its factorization.

53890421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 53890421 is about 7341.0095354794. The cubic root of 53890421 is about 377.7204735233.

The spelling of 53890421 in words is "fifty-three million, eight hundred ninety thousand, four hundred twenty-one".