56780446 has 4 divisors (see below), whose sum is σ = 85170672. Its totient is φ = 28390222.

The previous prime is 56780443. The next prime is 56780453. The reversal of 56780446 is 64408765.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 56780399 and 56780408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56780443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14195110 + ... + 14195113.

It is an arithmetic number, because the mean of its divisors is an integer number (21292668).

Almost surely, 2^56780446 is an apocalyptic number.

56780446 is a deficient number, since it is larger than the sum of its proper divisors (28390226).

56780446 is a wasteful number, since it uses less digits than its factorization.

56780446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28390225.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 56780446 is about 7535.2800876942. The cubic root of 56780446 is about 384.3553522995.

The spelling of 56780446 in words is "fifty-six million, seven hundred eighty thousand, four hundred forty-six".