51489527 has 2 divisors, whose sum is σ = 51489528. Its totient is φ = 51489526.

The previous prime is 51489517. The next prime is 51489539. The reversal of 51489527 is 72598415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51489527 - 2¹⁴ = 51473143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51489517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25744763 + 25744764.

It is an arithmetic number, because the mean of its divisors is an integer number (25744764).

Almost surely, 2^51489527 is an apocalyptic number.

51489527 is a deficient number, since it is larger than the sum of its proper divisors (1).

51489527 is an equidigital number, since it uses as much as digits as its factorization.

51489527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 41.

The square root of 51489527 is about 7175.6203216168. The cubic root of 51489527 is about 372.0257213301.

The spelling of 51489527 in words is "fifty-one million, four hundred eighty-nine thousand, five hundred twenty-seven".