63157247 has 4 divisors (see below), whose sum is σ = 63183120. Its totient is φ = 63131376.

The previous prime is 63157223. The next prime is 63157253. The reversal of 63157247 is 74275136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63157247 - 2¹⁶ = 63091711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63157207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8843 + ... + 14300.

It is an arithmetic number, because the mean of its divisors is an integer number (15795780).

Almost surely, 2^63157247 is an apocalyptic number.

63157247 is a deficient number, since it is larger than the sum of its proper divisors (25873).

63157247 is a wasteful number, since it uses less digits than its factorization.

63157247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25872.

The product of its digits is 35280, while the sum is 35.

The square root of 63157247 is about 7947.1533897365. The cubic root of 63157247 is about 398.2365011889.

The spelling of 63157247 in words is "sixty-three million, one hundred fifty-seven thousand, two hundred forty-seven".