50648778 has 12 divisors (see below), whose sum is σ = 109739058. Its totient is φ = 16882920.

The previous prime is 50648777. The next prime is 50648779. The reversal of 50648778 is 87784605.

It is an interprime number because it is at equal distance from previous prime (50648777) and next prime (50648779).

It can be written as a sum of positive squares in only one way, i.e., 48818169 + 1830609 = 6987^2 + 1353^2 .

It is not an unprimeable number, because it can be changed into a prime (50648777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1406893 + ... + 1406928.

Almost surely, 2^50648778 is an apocalyptic number.

50648778 is an abundant number, since it is smaller than the sum of its proper divisors (59090280).

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

50648778 is a wasteful number, since it uses less digits than its factorization.

50648778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813829 (or 2813826 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 50648778 is about 7116.7954867342. The cubic root of 50648778 is about 369.9897197046.

It can be divided in two parts, 506 and 48778, that added together give a square (49284 = 222²).

The spelling of 50648778 in words is "fifty million, six hundred forty-eight thousand, seven hundred seventy-eight".