124535561 has 2 divisors, whose sum is σ = 124535562. Its totient is φ = 124535560.

The previous prime is 124535539. The next prime is 124535581. The reversal of 124535561 is 165535421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117592336 + 6943225 = 10844^2 + 2635^2 .

It is a cyclic number.

It is not a de Polignac number, because 124535561 - 2²² = 120341257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124535581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62267780 + 62267781.

It is an arithmetic number, because the mean of its divisors is an integer number (62267781).

Almost surely, 2^124535561 is an apocalyptic number.

It is an amenable number.

124535561 is a deficient number, since it is larger than the sum of its proper divisors (1).

124535561 is an equidigital number, since it uses as much as digits as its factorization.

124535561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 32.

The square root of 124535561 is about 11159.5502149504. The cubic root of 124535561 is about 499.3799794669.

The spelling of 124535561 in words is "one hundred twenty-four million, five hundred thirty-five thousand, five hundred sixty-one".