20072051 has 2 divisors, whose sum is σ = 20072052. Its totient is φ = 20072050.

The previous prime is 20072047. The next prime is 20072069. The reversal of 20072051 is 15027002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20072051 - 2² = 20072047 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20072071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10036025 + 10036026.

It is an arithmetic number, because the mean of its divisors is an integer number (10036026).

Almost surely, 2^20072051 is an apocalyptic number.

20072051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20072051 is an equidigital number, since it uses as much as digits as its factorization.

20072051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 20072051 is about 4480.1842596036. The cubic root of 20072051 is about 271.7673318504.

Adding to 20072051 its reverse (15027002), we get a palindrome (35099053).

The spelling of 20072051 in words is "twenty million, seventy-two thousand, fifty-one".