56681750 has 32 divisors (see below), whose sum is σ = 111702240. Its totient is φ = 21477600.

The previous prime is 56681741. The next prime is 56681759. The reversal of 56681750 is 5718665.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56681741) and next prime (56681759).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56681759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1217 + ... + 10716.

It is an arithmetic number, because the mean of its divisors is an integer number (3490695).

Almost surely, 2^56681750 is an apocalyptic number.

56681750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56681750 is a deficient number, since it is larger than the sum of its proper divisors (55020490).

56681750 is a wasteful number, since it uses less digits than its factorization.

56681750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11969 (or 11959 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 56681750 is about 7528.7283122716. The cubic root of 56681750 is about 384.1325271371.

The spelling of 56681750 in words is "fifty-six million, six hundred eighty-one thousand, seven hundred fifty".