53865049 has 4 divisors (see below), whose sum is σ = 61560064. Its totient is φ = 46170036.

The previous prime is 53865047. The next prime is 53865067. The reversal of 53865049 is 94056835.

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 a cyclic number.

It is not a de Polignac number, because 53865049 - 2¹ = 53865047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53865041) 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, 3847497 + ... + 3847510.

It is an arithmetic number, because the mean of its divisors is an integer number (15390016).

Almost surely, 2^53865049 is an apocalyptic number.

It is an amenable number.

53865049 is a deficient number, since it is larger than the sum of its proper divisors (7695015).

53865049 is an equidigital number, since it uses as much as digits as its factorization.

53865049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7695014.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 53865049 is about 7339.2812318374. The cubic root of 53865049 is about 377.6611863743.

The spelling of 53865049 in words is "fifty-three million, eight hundred sixty-five thousand, forty-nine".