50978550 has 96 divisors (see below), whose sum is σ = 147704832. Its totient is φ = 11393280.

The previous prime is 50978513. The next prime is 50978561. The reversal of 50978550 is 5587905.

It is a junction number, because it is equal to n+sod(n) for n = 50978499 and 50978508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48834 + ... + 49866.

It is an arithmetic number, because the mean of its divisors is an integer number (1538592).

Almost surely, 2^50978550 is an apocalyptic number.

50978550 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 50978550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73852416).

50978550 is an abundant number, since it is smaller than the sum of its proper divisors (96726282).

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

50978550 is a wasteful number, since it uses less digits than its factorization.

50978550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 39.

The square root of 50978550 is about 7139.9264702096. The cubic root of 50978550 is about 370.7909789049.

The spelling of 50978550 in words is "fifty million, nine hundred seventy-eight thousand, five hundred fifty".