51252031 has 2 divisors, whose sum is σ = 51252032. Its totient is φ = 51252030.

The previous prime is 51252029. The next prime is 51252107. The reversal of 51252031 is 13025215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51252031 - 2¹ = 51252029 is a prime.

It is a super-2 number, since 2×51252031² = 5253541363249922, which contains 22 as substring.

Together with 51252029, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51255031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25626015 + 25626016.

It is an arithmetic number, because the mean of its divisors is an integer number (25626016).

Almost surely, 2^51252031 is an apocalyptic number.

51252031 is a deficient number, since it is larger than the sum of its proper divisors (1).

51252031 is an equidigital number, since it uses as much as digits as its factorization.

51252031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51252031 is about 7159.0523814259. The cubic root of 51252031 is about 371.4528487442.

Adding to 51252031 its reverse (13025215), we get a palindrome (64277246).

The spelling of 51252031 in words is "fifty-one million, two hundred fifty-two thousand, thirty-one".