51102427 has 2 divisors, whose sum is σ = 51102428. Its totient is φ = 51102426.

The previous prime is 51102407. The next prime is 51102431. The reversal of 51102427 is 72420115.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51102427 is a prime.

It is a super-2 number, since 2×51102427² = 5222916090580658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51102398 and 51102407.

It is not a weakly prime, because it can be changed into another prime (51102407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25551213 + 25551214.

It is an arithmetic number, because the mean of its divisors is an integer number (25551214).

Almost surely, 2^51102427 is an apocalyptic number.

51102427 is a deficient number, since it is larger than the sum of its proper divisors (1).

51102427 is an equidigital number, since it uses as much as digits as its factorization.

51102427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 51102427 is about 7148.5961558896. The cubic root of 51102427 is about 371.0910745282.

It can be divided in two parts, 51102 and 427, that added together give a square (51529 = 227²).

The spelling of 51102427 in words is "fifty-one million, one hundred two thousand, four hundred twenty-seven".