53787117 has 4 divisors (see below), whose sum is σ = 71716160. Its totient is φ = 35858076.

The previous prime is 53787091. The next prime is 53787127. The reversal of 53787117 is 71178735.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53787117 - 2⁷ = 53786989 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 (53787127) 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, 8964517 + ... + 8964522.

It is an arithmetic number, because the mean of its divisors is an integer number (17929040).

Almost surely, 2^53787117 is an apocalyptic number.

It is an amenable number.

53787117 is a deficient number, since it is larger than the sum of its proper divisors (17929043).

53787117 is a wasteful number, since it uses less digits than its factorization.

53787117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17929042.

The product of its digits is 41160, while the sum is 39.

The square root of 53787117 is about 7333.9700708416. The cubic root of 53787117 is about 377.4789649551.

The spelling of 53787117 in words is "fifty-three million, seven hundred eighty-seven thousand, one hundred seventeen".