53698287 has 4 divisors (see below), whose sum is σ = 71597720. Its totient is φ = 35798856.

The previous prime is 53698283. The next prime is 53698303. The reversal of 53698287 is 78289635.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 53698287 - 2² = 53698283 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53698283) 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, 8949712 + ... + 8949717.

It is an arithmetic number, because the mean of its divisors is an integer number (17899430).

Almost surely, 2^53698287 is an apocalyptic number.

53698287 is a deficient number, since it is larger than the sum of its proper divisors (17899433).

53698287 is a wasteful number, since it uses less digits than its factorization.

53698287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17899432.

The product of its digits is 725760, while the sum is 48.

The square root of 53698287 is about 7327.9115032866. The cubic root of 53698287 is about 377.2710469352.

The spelling of 53698287 in words is "fifty-three million, six hundred ninety-eight thousand, two hundred eighty-seven".