56776950 has 72 divisors (see below), whose sum is σ = 158224248. Its totient is φ = 15137280.

The previous prime is 56776943. The next prime is 56776961. The reversal of 56776950 is 5967765.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56776896 and 56776905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9814 + ... + 14486.

It is an arithmetic number, because the mean of its divisors is an integer number (2197559).

Almost surely, 2^56776950 is an apocalyptic number.

56776950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 56776950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79112124).

56776950 is an abundant number, since it is smaller than the sum of its proper divisors (101447298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56776950 is a wasteful number, since it uses less digits than its factorization.

56776950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700 (or 4683 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 45.

The square root of 56776950 is about 7535.0481086719. The cubic root of 56776950 is about 384.3474638216.

The spelling of 56776950 in words is "fifty-six million, seven hundred seventy-six thousand, nine hundred fifty".