54002061 has 6 divisors (see below), whose sum is σ = 78002990. Its totient is φ = 36001368.

The previous prime is 54002021. The next prime is 54002087. The reversal of 54002061 is 16020045.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 33698025 + 20304036 = 5805^2 + 4506^2 .

It is not a de Polignac number, because 54002061 - 2¹⁰ = 54001037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54002021) 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, 3000106 + ... + 3000123.

Almost surely, 2^54002061 is an apocalyptic number.

It is an amenable number.

54002061 is a deficient number, since it is larger than the sum of its proper divisors (24000929).

54002061 is a wasteful number, since it uses less digits than its factorization.

54002061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000235 (or 6000232 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 54002061 is about 7348.6094602993. The cubic root of 54002061 is about 377.9811236060.

The spelling of 54002061 in words is "fifty-four million, two thousand, sixty-one".