54021613 has 2 divisors, whose sum is σ = 54021614. Its totient is φ = 54021612.

The previous prime is 54021607. The next prime is 54021619. The reversal of 54021613 is 31612045.

It is a balanced prime because it is at equal distance from previous prime (54021607) and next prime (54021619).

It can be written as a sum of positive squares in only one way, i.e., 33200644 + 20820969 = 5762^2 + 4563^2 .

It is a cyclic number.

It is not a de Polignac number, because 54021613 - 2⁵ = 54021581 is a prime.

It is a super-2 number, since 2×54021613² = 5836669342243538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54021619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27010806 + 27010807.

It is an arithmetic number, because the mean of its divisors is an integer number (27010807).

Almost surely, 2^54021613 is an apocalyptic number.

It is an amenable number.

54021613 is a deficient number, since it is larger than the sum of its proper divisors (1).

54021613 is an equidigital number, since it uses as much as digits as its factorization.

54021613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 54021613 is about 7349.9396596163. The cubic root of 54021613 is about 378.0267354157.

Adding to 54021613 its reverse (31612045), we get a palindrome (85633658).

The spelling of 54021613 in words is "fifty-four million, twenty-one thousand, six hundred thirteen".