63509057 has 8 divisors (see below), whose sum is σ = 65564136. Its totient is φ = 61471872.

The previous prime is 63509053. The next prime is 63509063. The reversal of 63509057 is 75090536.

It can be written as a sum of positive squares in 4 ways, for example, as 57138481 + 6370576 = 7559^2 + 2524^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63509057 - 2² = 63509053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63509053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2933 + ... + 11645.

It is an arithmetic number, because the mean of its divisors is an integer number (8195517).

Almost surely, 2^63509057 is an apocalyptic number.

It is an amenable number.

63509057 is a deficient number, since it is larger than the sum of its proper divisors (2055079).

63509057 is a wasteful number, since it uses less digits than its factorization.

63509057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8947.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 63509057 is about 7969.2569917151. The cubic root of 63509057 is about 398.9745755916.

The spelling of 63509057 in words is "sixty-three million, five hundred nine thousand, fifty-seven".