1125461977 has 2 divisors, whose sum is σ = 1125461978. Its totient is φ = 1125461976.

The previous prime is 1125461927. The next prime is 1125461983. The reversal of 1125461977 is 7791645211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1084450761 + 41011216 = 32931^2 + 6404^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125461977 - 2¹⁵ = 1125429209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125461917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562730988 + 562730989.

It is an arithmetic number, because the mean of its divisors is an integer number (562730989).

Almost surely, 2^1125461977 is an apocalyptic number.

It is an amenable number.

1125461977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125461977 is an equidigital number, since it uses as much as digits as its factorization.

1125461977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 43.

The square root of 1125461977 is about 33547.9057021448. The cubic root of 1125461977 is about 1040.1842551374.

The spelling of 1125461977 in words is "one billion, one hundred twenty-five million, four hundred sixty-one thousand, nine hundred seventy-seven".