53865251 has 8 divisors (see below), whose sum is σ = 58816704. Its totient is φ = 48922920.

The previous prime is 53865223. The next prime is 53865263. The reversal of 53865251 is 15256835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53865251 - 2²² = 49670947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53865211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17816 + ... + 20618.

It is an arithmetic number, because the mean of its divisors is an integer number (7352088).

Almost surely, 2^53865251 is an apocalyptic number.

53865251 is a deficient number, since it is larger than the sum of its proper divisors (4951453).

53865251 is a wasteful number, since it uses less digits than its factorization.

53865251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561.

The product of its digits is 36000, while the sum is 35.

The square root of 53865251 is about 7339.2949933900. The cubic root of 53865251 is about 377.6616584644.

The spelling of 53865251 in words is "fifty-three million, eight hundred sixty-five thousand, two hundred fifty-one".