20070451 has 4 divisors (see below), whose sum is σ = 20120904. Its totient is φ = 20020000.

The previous prime is 20070437. The next prime is 20070461. The reversal of 20070451 is 15407002.

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 20070451 - 2⁹ = 20069939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20070461) 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, 24625 + ... + 25426.

It is an arithmetic number, because the mean of its divisors is an integer number (5030226).

Almost surely, 2^20070451 is an apocalyptic number.

20070451 is a deficient number, since it is larger than the sum of its proper divisors (50453).

20070451 is an equidigital number, since it uses as much as digits as its factorization.

20070451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50452.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20070451 is about 4480.0056919607. The cubic root of 20070451 is about 271.7601105441.

Adding to 20070451 its reverse (15407002), we get a palindrome (35477453).

The spelling of 20070451 in words is "twenty million, seventy thousand, four hundred fifty-one".