1541272157 has 2 divisors, whose sum is σ = 1541272158. Its totient is φ = 1541272156.

The previous prime is 1541272151. The next prime is 1541272169. The reversal of 1541272157 is 7512721451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1540876516 + 395641 = 39254^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 1541272157 - 2¹⁰ = 1541271133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1541272151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770636078 + 770636079.

It is an arithmetic number, because the mean of its divisors is an integer number (770636079).

Almost surely, 2^1541272157 is an apocalyptic number.

It is an amenable number.

1541272157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1541272157 is an equidigital number, since it uses as much as digits as its factorization.

1541272157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19600, while the sum is 35.

The square root of 1541272157 is about 39259.0391757109. The cubic root of 1541272157 is about 1155.1182470467.

The spelling of 1541272157 in words is "one billion, five hundred forty-one million, two hundred seventy-two thousand, one hundred fifty-seven".