63154561 has 2 divisors, whose sum is σ = 63154562. Its totient is φ = 63154560.

The previous prime is 63154549. The next prime is 63154577. The reversal of 63154561 is 16545136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43970161 + 19184400 = 6631^2 + 4380^2 .

It is a cyclic number.

It is not a de Polignac number, because 63154561 - 2⁵ = 63154529 is a prime.

It is not a weakly prime, because it can be changed into another prime (63154591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31577280 + 31577281.

It is an arithmetic number, because the mean of its divisors is an integer number (31577281).

Almost surely, 2^63154561 is an apocalyptic number.

It is an amenable number.

63154561 is a deficient number, since it is larger than the sum of its proper divisors (1).

63154561 is an equidigital number, since it uses as much as digits as its factorization.

63154561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 63154561 is about 7946.9843966123. The cubic root of 63154561 is about 398.2308556061.

Adding to 63154561 its reverse (16545136), we get a palindrome (79699697).

The spelling of 63154561 in words is "sixty-three million, one hundred fifty-four thousand, five hundred sixty-one".