1254157 has 2 divisors, whose sum is σ = 1254158. Its totient is φ = 1254156.

The previous prime is 1254151. The next prime is 1254161. The reversal of 1254157 is 7514521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972196 + 281961 = 986^2 + 531^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254157 - 2¹¹ = 1252109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627078 + 627079.

It is an arithmetic number, because the mean of its divisors is an integer number (627079).

2^1254157 is an apocalyptic number.

It is an amenable number.

1254157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254157 is an equidigital number, since it uses as much as digits as its factorization.

1254157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1400, while the sum is 25.

The square root of 1254157 is about 1119.8915126029. The cubic root of 1254157 is about 107.8410155056.

Adding to 1254157 its reverse (7514521), we get a palindrome (8768678).

It can be divided in two parts, 1254 and 157, that multiplied together give a triangular number (196878 = T₆₂₇).

The spelling of 1254157 in words is "one million, two hundred fifty-four thousand, one hundred fifty-seven".