56438477 has 2 divisors, whose sum is σ = 56438478. Its totient is φ = 56438476.

The previous prime is 56438471. The next prime is 56438537. The reversal of 56438477 is 77483465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35772361 + 20666116 = 5981^2 + 4546^2 .

It is a cyclic number.

It is not a de Polignac number, because 56438477 - 2⁴ = 56438461 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 (56438471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28219238 + 28219239.

It is an arithmetic number, because the mean of its divisors is an integer number (28219239).

Almost surely, 2^56438477 is an apocalyptic number.

It is an amenable number.

56438477 is a deficient number, since it is larger than the sum of its proper divisors (1).

56438477 is an equidigital number, since it uses as much as digits as its factorization.

56438477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 44.

The square root of 56438477 is about 7512.5546254254. The cubic root of 56438477 is about 383.5821848979.

The spelling of 56438477 in words is "fifty-six million, four hundred thirty-eight thousand, four hundred seventy-seven".