50513091 has 4 divisors (see below), whose sum is σ = 67350792. Its totient is φ = 33675392.

The previous prime is 50513087. The next prime is 50513119. The reversal of 50513091 is 19031505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50513091 - 2² = 50513087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50513051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8418846 + ... + 8418851.

It is an arithmetic number, because the mean of its divisors is an integer number (16837698).

Almost surely, 2^50513091 is an apocalyptic number.

50513091 is a deficient number, since it is larger than the sum of its proper divisors (16837701).

50513091 is a wasteful number, since it uses less digits than its factorization.

50513091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16837700.

The product of its (nonzero) digits is 675, while the sum is 24.

The square root of 50513091 is about 7107.2562216372. The cubic root of 50513091 is about 369.6590260225.

Adding to 50513091 its reverse (19031505), we get a palindrome (69544596).

The spelling of 50513091 in words is "fifty million, five hundred thirteen thousand, ninety-one".