51224453 has 6 divisors (see below), whose sum is σ = 59587686. Its totient is φ = 43906632.

The previous prime is 51224443. The next prime is 51224461. The reversal of 51224453 is 35442215.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 46485124 + 4739329 = 6818^2 + 2177^2 .

It is not a de Polignac number, because 51224453 - 2⁶ = 51224389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51224443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 522650 + ... + 522747.

It is an arithmetic number, because the mean of its divisors is an integer number (9931281).

Almost surely, 2^51224453 is an apocalyptic number.

It is an amenable number.

51224453 is a deficient number, since it is larger than the sum of its proper divisors (8363233).

51224453 is a wasteful number, since it uses less digits than its factorization.

51224453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045411 (or 1045404 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 51224453 is about 7157.1260293500. The cubic root of 51224453 is about 371.3862122657.

Adding to 51224453 its reverse (35442215), we get a palindrome (86666668).

The spelling of 51224453 in words is "fifty-one million, two hundred twenty-four thousand, four hundred fifty-three".