20501134 has 4 divisors (see below), whose sum is σ = 30751704. Its totient is φ = 10250566.

The previous prime is 20501123. The next prime is 20501141. The reversal of 20501134 is 43110502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5125282 + ... + 5125285.

It is an arithmetic number, because the mean of its divisors is an integer number (7687926).

Almost surely, 2^20501134 is an apocalyptic number.

20501134 is a deficient number, since it is larger than the sum of its proper divisors (10250570).

20501134 is a wasteful number, since it uses less digits than its factorization.

20501134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10250569.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20501134 is about 4527.8177966875. The cubic root of 20501134 is about 273.6902301347.

Adding to 20501134 its reverse (43110502), we get a palindrome (63611636).

The spelling of 20501134 in words is "twenty million, five hundred one thousand, one hundred thirty-four".