51101023 has 2 divisors, whose sum is σ = 51101024. Its totient is φ = 51101022.

The previous prime is 51101003. The next prime is 51101087. The reversal of 51101023 is 32010115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51101023 - 2¹³ = 51092831 is a prime.

It is a super-2 number, since 2×51101023² = 5222629103293058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51100994 and 51101012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51101003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25550511 + 25550512.

It is an arithmetic number, because the mean of its divisors is an integer number (25550512).

Almost surely, 2^51101023 is an apocalyptic number.

51101023 is a deficient number, since it is larger than the sum of its proper divisors (1).

51101023 is an equidigital number, since it uses as much as digits as its factorization.

51101023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 51101023 is about 7148.4979541160. The cubic root of 51101023 is about 371.0876760161.

Adding to 51101023 its reverse (32010115), we get a palindrome (83111138).

The spelling of 51101023 in words is "fifty-one million, one hundred one thousand, twenty-three".