50561552550 has 48 divisors (see below), whose sum is σ = 126349895232. Its totient is φ = 13380151200.

The previous prime is 50561552549. The next prime is 50561552551. The reversal of 50561552550 is 5525516505.

It is an interprime number because it is at equal distance from previous prime (50561552549) and next prime (50561552551).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 50561552499 and 50561552508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50561552551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1266904 + ... + 1306203.

It is an arithmetic number, because the mean of its divisors is an integer number (2632289484).

Almost surely, 2^50561552550 is an apocalyptic number.

50561552550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

50561552550 is an abundant number, since it is smaller than the sum of its proper divisors (75788342682).

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

50561552550 is a wasteful number, since it uses less digits than its factorization.

50561552550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573253 (or 2573248 counting only the distinct ones).

The product of its (nonzero) digits is 187500, while the sum is 39.

The spelling of 50561552550 in words is "fifty billion, five hundred sixty-one million, five hundred fifty-two thousand, five hundred fifty".