63138547 has 2 divisors, whose sum is σ = 63138548. Its totient is φ = 63138546.

The previous prime is 63138533. The next prime is 63138571. The reversal of 63138547 is 74583136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63138547 - 2²³ = 54749939 is a prime.

It is a super-2 number, since 2×63138547² = 7972952234542418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63138247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31569273 + 31569274.

It is an arithmetic number, because the mean of its divisors is an integer number (31569274).

Almost surely, 2^63138547 is an apocalyptic number.

63138547 is a deficient number, since it is larger than the sum of its proper divisors (1).

63138547 is an equidigital number, since it uses as much as digits as its factorization.

63138547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 63138547 is about 7945.9767807363. The cubic root of 63138547 is about 398.1971931758.

The spelling of 63138547 in words is "sixty-three million, one hundred thirty-eight thousand, five hundred forty-seven".