50012521 has 16 divisors (see below), whose sum is σ = 57640464. Its totient is φ = 42983424.

The previous prime is 50012513. The next prime is 50012527. The reversal of 50012521 is 12521005.

It can be written as a sum of positive squares in 8 ways, for example, as 1166400 + 48846121 = 1080^2 + 6989^2 .

It is a cyclic number.

It is not a de Polignac number, because 50012521 - 2³ = 50012513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50012495 and 50012504.

It is not an unprimeable number, because it can be changed into a prime (50012527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20271 + ... + 22603.

It is an arithmetic number, because the mean of its divisors is an integer number (3602529).

Almost surely, 2^50012521 is an apocalyptic number.

It is an amenable number.

50012521 is a deficient number, since it is larger than the sum of its proper divisors (7627943).

50012521 is a wasteful number, since it uses less digits than its factorization.

50012521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 50012521 is about 7071.9531248446. The cubic root of 50012521 is about 368.4338991364.

Adding to 50012521 its reverse (12521005), we get a palindrome (62533526).

The spelling of 50012521 in words is "fifty million, twelve thousand, five hundred twenty-one".