2051005157 has 2 divisors, whose sum is σ = 2051005158. Its totient is φ = 2051005156.

The previous prime is 2051005147. The next prime is 2051005181. The reversal of 2051005157 is 7515001502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1720092676 + 330912481 = 41474^2 + 18191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2051005157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051005147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025502578 + 1025502579.

It is an arithmetic number, because the mean of its divisors is an integer number (1025502579).

Almost surely, 2^2051005157 is an apocalyptic number.

It is an amenable number.

2051005157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051005157 is an equidigital number, since it uses as much as digits as its factorization.

2051005157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 2051005157 is about 45288.0244325142. The cubic root of 2051005157 is about 1270.5416824584.

Adding to 2051005157 its reverse (7515001502), we get a palindrome (9566006659).

The spelling of 2051005157 in words is "two billion, fifty-one million, five thousand, one hundred fifty-seven".