51532487 has 2 divisors, whose sum is σ = 51532488. Its totient is φ = 51532486.

The previous prime is 51532469. The next prime is 51532493. The reversal of 51532487 is 78423515.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51532487 - 2¹² = 51528391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51532417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25766243 + 25766244.

It is an arithmetic number, because the mean of its divisors is an integer number (25766244).

Almost surely, 2^51532487 is an apocalyptic number.

51532487 is a deficient number, since it is larger than the sum of its proper divisors (1).

51532487 is an equidigital number, since it uses as much as digits as its factorization.

51532487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 35.

The square root of 51532487 is about 7178.6131669007. The cubic root of 51532487 is about 372.1291584308.

The spelling of 51532487 in words is "fifty-one million, five hundred thirty-two thousand, four hundred eighty-seven".