54932981 has 2 divisors, whose sum is σ = 54932982. Its totient is φ = 54932980.

The previous prime is 54932959. The next prime is 54933013. The reversal of 54932981 is 18923945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44009956 + 10923025 = 6634^2 + 3305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54932981 is a prime.

It is a super-2 number, since 2×54932981² = 6035264803092722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54932951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27466490 + 27466491.

It is an arithmetic number, because the mean of its divisors is an integer number (27466491).

Almost surely, 2^54932981 is an apocalyptic number.

It is an amenable number.

54932981 is a deficient number, since it is larger than the sum of its proper divisors (1).

54932981 is an equidigital number, since it uses as much as digits as its factorization.

54932981 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 54932981 is about 7411.6786897436. The cubic root of 54932981 is about 380.1407165833.

The spelling of 54932981 in words is "fifty-four million, nine hundred thirty-two thousand, nine hundred eighty-one".