56476487 has 2 divisors, whose sum is σ = 56476488. Its totient is φ = 56476486.

The previous prime is 56476481. The next prime is 56476489. The reversal of 56476487 is 78467465.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56476487 - 2¹² = 56472391 is a prime.

It is a super-2 number, since 2×56476487² = 6379187167722338, which contains 22 as substring.

Together with 56476489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56476481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28238243 + 28238244.

It is an arithmetic number, because the mean of its divisors is an integer number (28238244).

Almost surely, 2^56476487 is an apocalyptic number.

56476487 is a deficient number, since it is larger than the sum of its proper divisors (1).

56476487 is an equidigital number, since it uses as much as digits as its factorization.

56476487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 47.

The square root of 56476487 is about 7515.0839649335. The cubic root of 56476487 is about 383.6682767969.

The spelling of 56476487 in words is "fifty-six million, four hundred seventy-six thousand, four hundred eighty-seven".