50251540 has 24 divisors (see below), whose sum is σ = 106577352. Its totient is φ = 19900800.

The previous prime is 50251517. The next prime is 50251547. The reversal of 50251540 is 4515205.

It can be written as a sum of positive squares in 4 ways, for example, as 2944656 + 47306884 = 1716^2 + 6878^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50251547) 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, 10419 + ... + 14458.

It is an arithmetic number, because the mean of its divisors is an integer number (4440723).

Almost surely, 2^50251540 is an apocalyptic number.

It is an amenable number.

50251540 is an abundant number, since it is smaller than the sum of its proper divisors (56325812).

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

50251540 is a wasteful number, since it uses less digits than its factorization.

50251540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24987 (or 24985 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 50251540 is about 7088.8320617715. The cubic root of 50251540 is about 369.0199042835.

Adding to 50251540 its reverse (4515205), we get a palindrome (54766745).

The spelling of 50251540 in words is "fifty million, two hundred fifty-one thousand, five hundred forty".