54021611 has 4 divisors (see below), whose sum is σ = 61738992. Its totient is φ = 46304232.

The previous prime is 54021607. The next prime is 54021613. The reversal of 54021611 is 11612045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11612045 = 5 ⋅2322409.

It is a cyclic number.

It is not a de Polignac number, because 54021611 - 2² = 54021607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54021613) 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, 3858680 + ... + 3858693.

It is an arithmetic number, because the mean of its divisors is an integer number (15434748).

Almost surely, 2^54021611 is an apocalyptic number.

54021611 is a deficient number, since it is larger than the sum of its proper divisors (7717381).

54021611 is an equidigital number, since it uses as much as digits as its factorization.

54021611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717380.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 54021611 is about 7349.9395235607. The cubic root of 54021611 is about 378.0267307506.

Adding to 54021611 its reverse (11612045), we get a palindrome (65633656).

The spelling of 54021611 in words is "fifty-four million, twenty-one thousand, six hundred eleven".