54473475421 has 2 divisors, whose sum is σ = 54473475422. Its totient is φ = 54473475420.

The previous prime is 54473475409. The next prime is 54473475481. The reversal of 54473475421 is 12457437445.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43675148196 + 10798327225 = 208986^2 + 103915^2 .

It is a cyclic number.

It is not a de Polignac number, because 54473475421 - 2⁵ = 54473475389 is a prime.

It is a super-2 number, since 2×54473475421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54473475401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27236737710 + 27236737711.

It is an arithmetic number, because the mean of its divisors is an integer number (27236737711).

Almost surely, 2^54473475421 is an apocalyptic number.

It is an amenable number.

54473475421 is a deficient number, since it is larger than the sum of its proper divisors (1).

54473475421 is an equidigital number, since it uses as much as digits as its factorization.

54473475421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1881600, while the sum is 46.

The spelling of 54473475421 in words is "fifty-four billion, four hundred seventy-three million, four hundred seventy-five thousand, four hundred twenty-one".