53320251 has 8 divisors (see below), whose sum is σ = 74835520. Its totient is φ = 33675912.

The previous prime is 53320237. The next prime is 53320273. The reversal of 53320251 is 15202335.

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

It is not a de Polignac number, because 53320251 - 2¹⁵ = 53287483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53320291) 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, 467665 + ... + 467778.

It is an arithmetic number, because the mean of its divisors is an integer number (9354440).

Almost surely, 2^53320251 is an apocalyptic number.

53320251 is a deficient number, since it is larger than the sum of its proper divisors (21515269).

53320251 is a wasteful number, since it uses less digits than its factorization.

53320251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935465.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 53320251 is about 7302.0716923350. The cubic root of 53320251 is about 376.3836316680.

Adding to 53320251 its reverse (15202335), we get a palindrome (68522586).

The spelling of 53320251 in words is "fifty-three million, three hundred twenty thousand, two hundred fifty-one".