53633861 has 16 divisors (see below), whose sum is σ = 59616000. Its totient is φ = 47993088.

The previous prime is 53633849. The next prime is 53633873. The reversal of 53633861 is 16833635.

It is an interprime number because it is at equal distance from previous prime (53633849) and next prime (53633873).

It is not a de Polignac number, because 53633861 - 2¹⁰ = 53632837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53633161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89240 + ... + 89838.

It is an arithmetic number, because the mean of its divisors is an integer number (3726000).

Almost surely, 2^53633861 is an apocalyptic number.

It is an amenable number.

53633861 is a deficient number, since it is larger than the sum of its proper divisors (5982139).

53633861 is a wasteful number, since it uses less digits than its factorization.

53633861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868.

The product of its digits is 38880, while the sum is 35.

The square root of 53633861 is about 7323.5142520514. The cubic root of 53633861 is about 377.1201061080.

The spelling of 53633861 in words is "fifty-three million, six hundred thirty-three thousand, eight hundred sixty-one".