50778144 has 48 divisors (see below), whose sum is σ = 148105440. Its totient is φ = 16925760.

The previous prime is 50778139. The next prime is 50778151. The reversal of 50778144 is 44187705.

50778144 is a `hidden beast` number, since 507 + 7 + 8 + 144 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 50778099 and 50778108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28522 + ... + 30249.

It is an arithmetic number, because the mean of its divisors is an integer number (3085530).

Almost surely, 2^50778144 is an apocalyptic number.

50778144 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

50778144 is an abundant number, since it is smaller than the sum of its proper divisors (97327296).

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

50778144 is a wasteful number, since it uses less digits than its factorization.

50778144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58790 (or 58776 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 50778144 is about 7125.8784721605. The cubic root of 50778144 is about 370.3044584378.

The spelling of 50778144 in words is "fifty million, seven hundred seventy-eight thousand, one hundred forty-four".