53321251 has 4 divisors (see below), whose sum is σ = 53356600. Its totient is φ = 53285904.

The previous prime is 53321243. The next prime is 53321269. The reversal of 53321251 is 15212335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15212335 = 5 ⋅3042467.

It is a cyclic number.

It is not a de Polignac number, because 53321251 - 2³ = 53321243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53321221) 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, 15306 + ... + 18463.

It is an arithmetic number, because the mean of its divisors is an integer number (13339150).

Almost surely, 2^53321251 is an apocalyptic number.

53321251 is a deficient number, since it is larger than the sum of its proper divisors (35349).

53321251 is a wasteful number, since it uses less digits than its factorization.

53321251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35348.

The product of its digits is 900, while the sum is 22.

The square root of 53321251 is about 7302.1401657322. The cubic root of 53321251 is about 376.3859846282.

Adding to 53321251 its reverse (15212335), we get a palindrome (68533586).

The spelling of 53321251 in words is "fifty-three million, three hundred twenty-one thousand, two hundred fifty-one".