50551040 has 72 divisors (see below), whose sum is σ = 122971128. Its totient is φ = 19906560.

The previous prime is 50551037. The next prime is 50551043. The reversal of 50551040 is 4015505.

It is an interprime number because it is at equal distance from previous prime (50551037) and next prime (50551043).

It can be written as a sum of positive squares in 4 ways, for example, as 4528384 + 46022656 = 2128^2 + 6784^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50551043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93170 + ... + 93710.

Almost surely, 2^50551040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50551040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61485564).

50551040 is an abundant number, since it is smaller than the sum of its proper divisors (72420088).

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

50551040 is an equidigital number, since it uses as much as digits as its factorization.

50551040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 50551040 is about 7109.9254567119. The cubic root of 50551040 is about 369.7515741691.

Adding to 50551040 its reverse (4015505), we get a palindrome (54566545).

The spelling of 50551040 in words is "fifty million, five hundred fifty-one thousand, forty".