54056421 has 6 divisors (see below), whose sum is σ = 78081510. Its totient is φ = 36037608.

The previous prime is 54056411. The next prime is 54056423. The reversal of 54056421 is 12465045.

It can be written as a sum of positive squares in only one way, i.e., 50253921 + 3802500 = 7089^2 + 1950^2 .

It is not a de Polignac number, because 54056421 - 2¹⁵ = 54023653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54056423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3003126 + ... + 3003143.

It is an arithmetic number, because the mean of its divisors is an integer number (13013585).

Almost surely, 2^54056421 is an apocalyptic number.

It is an amenable number.

54056421 is a deficient number, since it is larger than the sum of its proper divisors (24025089).

54056421 is a wasteful number, since it uses less digits than its factorization.

54056421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006275 (or 6006272 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 54056421 is about 7352.3071889034. The cubic root of 54056421 is about 378.1079098985.

The spelling of 54056421 in words is "fifty-four million, fifty-six thousand, four hundred twenty-one".