54425561 has 2 divisors, whose sum is σ = 54425562. Its totient is φ = 54425560.

The previous prime is 54425543. The next prime is 54425563. The reversal of 54425561 is 16552445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44622400 + 9803161 = 6680^2 + 3131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54425561 is a prime.

Together with 54425563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54425563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27212780 + 27212781.

It is an arithmetic number, because the mean of its divisors is an integer number (27212781).

Almost surely, 2^54425561 is an apocalyptic number.

It is an amenable number.

54425561 is a deficient number, since it is larger than the sum of its proper divisors (1).

54425561 is an equidigital number, since it uses as much as digits as its factorization.

54425561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24000, while the sum is 32.

The square root of 54425561 is about 7377.3681621565. The cubic root of 54425561 is about 378.9666314725.

The spelling of 54425561 in words is "fifty-four million, four hundred twenty-five thousand, five hundred sixty-one".