20451050 has 12 divisors (see below), whose sum is σ = 38039046. Its totient is φ = 8180400.

The previous prime is 20451037. The next prime is 20451059. The reversal of 20451050 is 5015402.

It can be written as a sum of positive squares in 3 ways, for example, as 9114361 + 11336689 = 3019^2 + 3367^2 .

It is a super-2 number, since 2×20451050² = 836490892205000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20451059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204461 + ... + 204560.

Almost surely, 2^20451050 is an apocalyptic number.

20451050 is a deficient number, since it is larger than the sum of its proper divisors (17587996).

20451050 is a wasteful number, since it uses less digits than its factorization.

20451050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409033 (or 409028 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 20451050 is about 4522.2837151156. The cubic root of 20451050 is about 273.4671745210.

Adding to 20451050 its reverse (5015402), we get a palindrome (25466452).

The spelling of 20451050 in words is "twenty million, four hundred fifty-one thousand, fifty".