1157977 has 2 divisors, whose sum is σ = 1157978. Its totient is φ = 1157976.

The previous prime is 1157969. The next prime is 1157987. The reversal of 1157977 is 7797511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1073296 + 84681 = 1036^2 + 291^2 .

It is an emirp because it is prime and its reverse (7797511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1157977 - 2³ = 1157969 is a prime.

1157977 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1157987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578988 + 578989.

It is an arithmetic number, because the mean of its divisors is an integer number (578989).

2^1157977 is an apocalyptic number.

It is an amenable number.

1157977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157977 is an equidigital number, since it uses as much as digits as its factorization.

1157977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15435, while the sum is 37.

The square root of 1157977 is about 1076.0933974335. The cubic root of 1157977 is about 105.0106414007.

The spelling of 1157977 in words is "one million, one hundred fifty-seven thousand, nine hundred seventy-seven".