53213251 has 16 divisors (see below), whose sum is σ = 65757888. Its totient is φ = 41932800.

The previous prime is 53213233. The next prime is 53213257. The reversal of 53213251 is 15231235.

It is not a de Polignac number, because 53213251 - 2⁷ = 53213123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53213257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24531 + ... + 26611.

It is an arithmetic number, because the mean of its divisors is an integer number (4109868).

Almost surely, 2^53213251 is an apocalyptic number.

53213251 is a deficient number, since it is larger than the sum of its proper divisors (12544637).

53213251 is a wasteful number, since it uses less digits than its factorization.

53213251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382.

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

The square root of 53213251 is about 7294.7413250917. The cubic root of 53213251 is about 376.1316947578.

Adding to 53213251 its reverse (15231235), we get a palindrome (68444486).

The spelling of 53213251 in words is "fifty-three million, two hundred thirteen thousand, two hundred fifty-one".