51023432501 has 2 divisors, whose sum is σ = 51023432502. Its totient is φ = 51023432500.

The previous prime is 51023432491. The next prime is 51023432531. The reversal of 51023432501 is 10523432015.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31268848900 + 19754583601 = 176830^2 + 140551^2 .

It is a cyclic number.

It is not a de Polignac number, because 51023432501 - 2²⁶ = 50956323637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51023432531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25511716250 + 25511716251.

It is an arithmetic number, because the mean of its divisors is an integer number (25511716251).

Almost surely, 2^51023432501 is an apocalyptic number.

It is an amenable number.

51023432501 is a deficient number, since it is larger than the sum of its proper divisors (1).

51023432501 is an equidigital number, since it uses as much as digits as its factorization.

51023432501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 51023432501 its reverse (10523432015), we get a palindrome (61546864516).

The spelling of 51023432501 in words is "fifty-one billion, twenty-three million, four hundred thirty-two thousand, five hundred one".