54921983 has 2 divisors, whose sum is σ = 54921984. Its totient is φ = 54921982.

The previous prime is 54921943. The next prime is 54922003. The reversal of 54921983 is 38912945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54921983 - 2²² = 50727679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54921983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54921943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27460991 + 27460992.

It is an arithmetic number, because the mean of its divisors is an integer number (27460992).

Almost surely, 2^54921983 is an apocalyptic number.

54921983 is a deficient number, since it is larger than the sum of its proper divisors (1).

54921983 is an equidigital number, since it uses as much as digits as its factorization.

54921983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 54921983 is about 7410.9367154227. The cubic root of 54921983 is about 380.1153458706.

The spelling of 54921983 in words is "fifty-four million, nine hundred twenty-one thousand, nine hundred eighty-three".