51453213 has 16 divisors (see below), whose sum is σ = 78973440. Its totient is φ = 29188656.

The previous prime is 51453187. The next prime is 51453217. The reversal of 51453213 is 31235415.

It is not a de Polignac number, because 51453213 - 2¹⁴ = 51436829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51453217) 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, 5895 + ... + 11732.

It is an arithmetic number, because the mean of its divisors is an integer number (4935840).

Almost surely, 2^51453213 is an apocalyptic number.

It is an amenable number.

51453213 is a deficient number, since it is larger than the sum of its proper divisors (27520227).

51453213 is a wasteful number, since it uses less digits than its factorization.

51453213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17776.

The product of its digits is 1800, while the sum is 24.

The square root of 51453213 is about 7173.0895017419. The cubic root of 51453213 is about 371.9382412795.

Adding to 51453213 its reverse (31235415), we get a palindrome (82688628).

The spelling of 51453213 in words is "fifty-one million, four hundred fifty-three thousand, two hundred thirteen".