53870421 has 8 divisors (see below), whose sum is σ = 78357024. Its totient is φ = 32648720.

The previous prime is 53870417. The next prime is 53870437. The reversal of 53870421 is 12407835.

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 53870421 - 2² = 53870417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53870441) 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, 816186 + ... + 816251.

It is an arithmetic number, because the mean of its divisors is an integer number (9794628).

Almost surely, 2^53870421 is an apocalyptic number.

It is an amenable number.

53870421 is a deficient number, since it is larger than the sum of its proper divisors (24486603).

53870421 is a wasteful number, since it uses less digits than its factorization.

53870421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632451.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 53870421 is about 7339.6471986057. The cubic root of 53870421 is about 377.6737407641.

The spelling of 53870421 in words is "fifty-three million, eight hundred seventy thousand, four hundred twenty-one".