53671563 has 36 divisors (see below), whose sum is σ = 86645832. Its totient is φ = 31749120.

The previous prime is 53671559. The next prime is 53671589. The reversal of 53671563 is 36517635.

It is a happy number.

53671563 is a `hidden beast` number, since 536 + 71 + 56 + 3 = 666.

It is not a de Polignac number, because 53671563 - 2² = 53671559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53671543) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 277995 + ... + 278187.

Almost surely, 2^53671563 is an apocalyptic number.

53671563 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

53671563 is a deficient number, since it is larger than the sum of its proper divisors (32974269).

53671563 is a wasteful number, since it uses less digits than its factorization.

53671563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 260 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 53671563 is about 7326.0878373113. The cubic root of 53671563 is about 377.2084511181.

The spelling of 53671563 in words is "fifty-three million, six hundred seventy-one thousand, five hundred sixty-three".