51633487 has 2 divisors, whose sum is σ = 51633488. Its totient is φ = 51633486.

The previous prime is 51633479. The next prime is 51633509. The reversal of 51633487 is 78433615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51633487 - 2³ = 51633479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51633467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25816743 + 25816744.

It is an arithmetic number, because the mean of its divisors is an integer number (25816744).

Almost surely, 2^51633487 is an apocalyptic number.

51633487 is a deficient number, since it is larger than the sum of its proper divisors (1).

51633487 is an equidigital number, since it uses as much as digits as its factorization.

51633487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 51633487 is about 7185.6445083235. The cubic root of 51633487 is about 372.3721153124.

The spelling of 51633487 in words is "fifty-one million, six hundred thirty-three thousand, four hundred eighty-seven".