63415481 has 2 divisors, whose sum is σ = 63415482. Its totient is φ = 63415480.

The previous prime is 63415421. The next prime is 63415493. The reversal of 63415481 is 18451436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61089856 + 2325625 = 7816^2 + 1525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63415481 is a prime.

It is a super-2 number, since 2×63415481² = 8043046460922722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63415421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31707740 + 31707741.

It is an arithmetic number, because the mean of its divisors is an integer number (31707741).

Almost surely, 2^63415481 is an apocalyptic number.

It is an amenable number.

63415481 is a deficient number, since it is larger than the sum of its proper divisors (1).

63415481 is an equidigital number, since it uses as much as digits as its factorization.

63415481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 32.

The square root of 63415481 is about 7963.3837657117. The cubic root of 63415481 is about 398.7785258825.

The spelling of 63415481 in words is "sixty-three million, four hundred fifteen thousand, four hundred eighty-one".