63481511 has 2 divisors, whose sum is σ = 63481512. Its totient is φ = 63481510.

The previous prime is 63481501. The next prime is 63481513. The reversal of 63481511 is 11518436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63481511 - 2⁶ = 63481447 is a prime.

Together with 63481513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63481513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31740755 + 31740756.

It is an arithmetic number, because the mean of its divisors is an integer number (31740756).

Almost surely, 2^63481511 is an apocalyptic number.

63481511 is a deficient number, since it is larger than the sum of its proper divisors (1).

63481511 is an equidigital number, since it uses as much as digits as its factorization.

63481511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 29.

The square root of 63481511 is about 7967.5285377587. The cubic root of 63481511 is about 398.9168843819.

Adding to 63481511 its reverse (11518436), we get a palindrome (74999947).

The spelling of 63481511 in words is "sixty-three million, four hundred eighty-one thousand, five hundred eleven".