51254533 has 16 divisors (see below), whose sum is σ = 59351040. Its totient is φ = 43772400.

The previous prime is 51254521. The next prime is 51254549. The reversal of 51254533 is 33545215.

It is a cyclic number.

It is not a de Polignac number, because 51254533 - 2¹³ = 51246341 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 (51254503) 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, 25578 + ... + 27508.

It is an arithmetic number, because the mean of its divisors is an integer number (3709440).

Almost surely, 2^51254533 is an apocalyptic number.

It is an amenable number.

51254533 is a deficient number, since it is larger than the sum of its proper divisors (8096507).

51254533 is a wasteful number, since it uses less digits than its factorization.

51254533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088.

The product of its digits is 9000, while the sum is 28.

The square root of 51254533 is about 7159.2271230909. The cubic root of 51254533 is about 371.4588931220.

Adding to 51254533 its reverse (33545215), we get a palindrome (84799748).

It can be divided in two parts, 512545 and 33, that added together give a triangular number (512578 = T₁₀₁₂).

The spelling of 51254533 in words is "fifty-one million, two hundred fifty-four thousand, five hundred thirty-three".