20345051 has 2 divisors, whose sum is σ = 20345052. Its totient is φ = 20345050.

The previous prime is 20345033. The next prime is 20345069. The reversal of 20345051 is 15054302.

It is a balanced prime because it is at equal distance from previous prime (20345033) and next prime (20345069).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20345051 is a prime.

It is a super-2 number, since 2×20345051² = 827842200385202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20345011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172525 + 10172526.

It is an arithmetic number, because the mean of its divisors is an integer number (10172526).

Almost surely, 2^20345051 is an apocalyptic number.

20345051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20345051 is an equidigital number, since it uses as much as digits as its factorization.

20345051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 20345051 is about 4510.5488579551. The cubic root of 20345051 is about 272.9938903846.

Adding to 20345051 its reverse (15054302), we get a palindrome (35399353).

It can be divided in two parts, 203 and 45051, that added together give a palindrome (45254).

The spelling of 20345051 in words is "twenty million, three hundred forty-five thousand, fifty-one".