54661489 has 2 divisors, whose sum is σ = 54661490. Its totient is φ = 54661488.

The previous prime is 54661421. The next prime is 54661507. The reversal of 54661489 is 98416645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49463089 + 5198400 = 7033^2 + 2280^2 .

It is a cyclic number.

It is not a de Polignac number, because 54661489 - 2¹³ = 54653297 is a prime.

It is not a weakly prime, because it can be changed into another prime (54661589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27330744 + 27330745.

It is an arithmetic number, because the mean of its divisors is an integer number (27330745).

Almost surely, 2^54661489 is an apocalyptic number.

It is an amenable number.

54661489 is a deficient number, since it is larger than the sum of its proper divisors (1).

54661489 is an equidigital number, since it uses as much as digits as its factorization.

54661489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The square root of 54661489 is about 7393.3408551209. The cubic root of 54661489 is about 379.5134331099.

The spelling of 54661489 in words is "fifty-four million, six hundred sixty-one thousand, four hundred eighty-nine".