2051574157 has 2 divisors, whose sum is σ = 2051574158. Its totient is φ = 2051574156.

The previous prime is 2051574097. The next prime is 2051574167. The reversal of 2051574157 is 7514751502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1598480361 + 453093796 = 39981^2 + 21286^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051574157 - 2⁷ = 2051574029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051574167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025787078 + 1025787079.

It is an arithmetic number, because the mean of its divisors is an integer number (1025787079).

Almost surely, 2^2051574157 is an apocalyptic number.

It is an amenable number.

2051574157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051574157 is an equidigital number, since it uses as much as digits as its factorization.

2051574157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 2051574157 is about 45294.3060108001. The cubic root of 2051574157 is about 1270.6591649151.

The spelling of 2051574157 in words is "two billion, fifty-one million, five hundred seventy-four thousand, one hundred fifty-seven".