51263623 has 2 divisors, whose sum is σ = 51263624. Its totient is φ = 51263622.

The previous prime is 51263621. The next prime is 51263629. The reversal of 51263623 is 32636215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51263623 - 2¹ = 51263621 is a prime.

It is a super-2 number, since 2×51263623² = 5255918086172258, which contains 22 as substring.

Together with 51263621, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 51263591 and 51263600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51263621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25631811 + 25631812.

It is an arithmetic number, because the mean of its divisors is an integer number (25631812).

Almost surely, 2^51263623 is an apocalyptic number.

51263623 is a deficient number, since it is larger than the sum of its proper divisors (1).

51263623 is an equidigital number, since it uses as much as digits as its factorization.

51263623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 51263623 is about 7159.8619400097. The cubic root of 51263623 is about 371.4808512562.

Adding to 51263623 its reverse (32636215), we get a palindrome (83899838).

The spelling of 51263623 in words is "fifty-one million, two hundred sixty-three thousand, six hundred twenty-three".