67054421 has 4 divisors (see below), whose sum is σ = 76633632. Its totient is φ = 57475212.

The previous prime is 67054411. The next prime is 67054423. The reversal of 67054421 is 12445076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67054421 - 2¹⁰ = 67053397 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 (67054423) 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, 4789595 + ... + 4789608.

It is an arithmetic number, because the mean of its divisors is an integer number (19158408).

Almost surely, 2^67054421 is an apocalyptic number.

It is an amenable number.

67054421 is a deficient number, since it is larger than the sum of its proper divisors (9579211).

67054421 is an equidigital number, since it uses as much as digits as its factorization.

67054421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9579210.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 67054421 is about 8188.6763887700. The cubic root of 67054421 is about 406.2647472043.

Adding to 67054421 its reverse (12445076), we get a palindrome (79499497).

The spelling of 67054421 in words is "sixty-seven million, fifty-four thousand, four hundred twenty-one".