53687977 has 12 divisors (see below), whose sum is σ = 65741520. Its totient is φ = 43595496.

The previous prime is 53687947. The next prime is 53688043. The reversal of 53687977 is 77978635.

It is a happy number.

It is not a de Polignac number, because 53687977 - 2⁷ = 53687849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53687917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27903 + ... + 29764.

It is an arithmetic number, because the mean of its divisors is an integer number (5478460).

Almost surely, 2^53687977 is an apocalyptic number.

It is an amenable number.

53687977 is a deficient number, since it is larger than the sum of its proper divisors (12053543).

53687977 is a wasteful number, since it uses less digits than its factorization.

53687977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57700 (or 57693 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 52.

The square root of 53687977 is about 7327.2079948641. The cubic root of 53687977 is about 377.2469002092.

The spelling of 53687977 in words is "fifty-three million, six hundred eighty-seven thousand, nine hundred seventy-seven".