54786421 has 8 divisors (see below), whose sum is σ = 56026880. Its totient is φ = 53559792.

The previous prime is 54786409. The next prime is 54786439. The reversal of 54786421 is 12468745.

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 54786421 - 2⁷ = 54786293 is a prime.

It is a super-3 number, since 3×54786421³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54786451) 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, 4771 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (7003360).

Almost surely, 2^54786421 is an apocalyptic number.

It is an amenable number.

54786421 is a deficient number, since it is larger than the sum of its proper divisors (1240459).

54786421 is a wasteful number, since it uses less digits than its factorization.

54786421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6915.

The product of its digits is 53760, while the sum is 37.

The square root of 54786421 is about 7401.7849874203. The cubic root of 54786421 is about 379.8023464252.

It can be divided in two parts, 547 and 86421, that added together give a palindrome (86968).

The spelling of 54786421 in words is "fifty-four million, seven hundred eighty-six thousand, four hundred twenty-one".