20413151 has 4 divisors (see below), whose sum is σ = 22268904. Its totient is φ = 18557400.

The previous prime is 20413147. The next prime is 20413157. The reversal of 20413151 is 15131402.

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 20413151 - 2² = 20413147 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413157) 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, 927860 + ... + 927881.

It is an arithmetic number, because the mean of its divisors is an integer number (5567226).

Almost surely, 2^20413151 is an apocalyptic number.

20413151 is a deficient number, since it is larger than the sum of its proper divisors (1855753).

20413151 is a wasteful number, since it uses less digits than its factorization.

20413151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855752.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20413151 is about 4518.0915218707. The cubic root of 20413151 is about 273.2981442240.

Adding to 20413151 its reverse (15131402), we get a palindrome (35544553).

The spelling of 20413151 in words is "twenty million, four hundred thirteen thousand, one hundred fifty-one".