53802251 has 4 divisors (see below), whose sum is σ = 53825952. Its totient is φ = 53778552.

The previous prime is 53802247. The next prime is 53802269. The reversal of 53802251 is 15220835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53802251 - 2² = 53802247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53802251.

It is not an unprimeable number, because it can be changed into a prime (53802211) 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, 8036 + ... + 13121.

It is an arithmetic number, because the mean of its divisors is an integer number (13456488).

Almost surely, 2^53802251 is an apocalyptic number.

53802251 is a deficient number, since it is larger than the sum of its proper divisors (23701).

53802251 is a wasteful number, since it uses less digits than its factorization.

53802251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23700.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 53802251 is about 7335.0017723243. The cubic root of 53802251 is about 377.5143651975.

Subtracting from 53802251 its sum of digits (26), we obtain a square (53802225 = 7335²).

The spelling of 53802251 in words is "fifty-three million, eight hundred two thousand, two hundred fifty-one".