54071561 has 2 divisors, whose sum is σ = 54071562. Its totient is φ = 54071560.

The previous prime is 54071539. The next prime is 54071569. The reversal of 54071561 is 16517045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36060025 + 18011536 = 6005^2 + 4244^2 .

It is a cyclic number.

It is not a de Polignac number, because 54071561 - 2¹⁰ = 54070537 is a prime.

It is not a weakly prime, because it can be changed into another prime (54071569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27035780 + 27035781.

It is an arithmetic number, because the mean of its divisors is an integer number (27035781).

Almost surely, 2^54071561 is an apocalyptic number.

It is an amenable number.

54071561 is a deficient number, since it is larger than the sum of its proper divisors (1).

54071561 is an equidigital number, since it uses as much as digits as its factorization.

54071561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 54071561 is about 7353.3367255961. The cubic root of 54071561 is about 378.1432064726.

The spelling of 54071561 in words is "fifty-four million, seventy-one thousand, five hundred sixty-one".