53251311 has 8 divisors (see below), whose sum is σ = 71259184. Its totient is φ = 35372160.

The previous prime is 53251307. The next prime is 53251313. The reversal of 53251311 is 11315235.

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

It is not a de Polignac number, because 53251311 - 2² = 53251307 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 (53251313) 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, 31210 + ... + 32871.

It is an arithmetic number, because the mean of its divisors is an integer number (8907398).

Almost surely, 2^53251311 is an apocalyptic number.

53251311 is a deficient number, since it is larger than the sum of its proper divisors (18007873).

53251311 is a wasteful number, since it uses less digits than its factorization.

53251311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64361.

The product of its digits is 450, while the sum is 21.

The square root of 53251311 is about 7297.3495873502. The cubic root of 53251311 is about 376.2213476192.

Adding to 53251311 its reverse (11315235), we get a palindrome (64566546).

The spelling of 53251311 in words is "fifty-three million, two hundred fifty-one thousand, three hundred eleven".