63511051 has 4 divisors (see below), whose sum is σ = 63560952. Its totient is φ = 63461152.

The previous prime is 63511003. The next prime is 63511057. The reversal of 63511051 is 15011536.

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 63511051 - 2²¹ = 61413899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63511057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22990 + ... + 25603.

It is an arithmetic number, because the mean of its divisors is an integer number (15890238).

Almost surely, 2^63511051 is an apocalyptic number.

63511051 is a deficient number, since it is larger than the sum of its proper divisors (49901).

63511051 is a wasteful number, since it uses less digits than its factorization.

63511051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49900.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 63511051 is about 7969.3820964991. The cubic root of 63511051 is about 398.9787510957.

Adding to 63511051 its reverse (15011536), we get a palindrome (78522587).

The spelling of 63511051 in words is "sixty-three million, five hundred eleven thousand, fifty-one".